{"title":"BIG BORE HEAD \u0026 CYLINDER KITS, GY6","description":" ","products":[{"product_id":"80cc-big-bore-head-cylinder-kit-gy6-64mm","title":"80cc Big Bore Head \u0026 Cylinder Kit, GY6 64mm","description":"80cc Big Bore Kit with \u003cspan style=\"font-weight: bold; text-decoration: underline;\"\u003e64mm \u003c\/span\u003eValve Head Assembly\u003cdiv\u003eFor scooters with 139QMB or 139QMI engines Scooter \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eBefore ordering please ensure you order the BBK with the correct length Valves for your Head Assembly. You head should look like one of the 2 in the 2nd picture.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53091832463471,"sku":"PSTN-0103-U1","price":52.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-bbk.jpg?v=1778735080"},{"product_id":"100cc-big-bore-head-cylinder-kit-gy6-64mm","title":"100cc Big Bore Head \u0026 Cylinder Kit, GY6 64mm","description":"100cc Big Bore Kit with \u003cspan style=\"font-weight: bold; text-decoration: underline;\"\u003e64mm \u003c\/span\u003eValve Head Assembly\u003cdiv\u003eFor scooters with 139QMB or 139QMI engines Scooter \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eBefore ordering please ensure you order the BBK with the correct length Valves for your Head Assembly. You head should look like one of the 2 in the 2nd picture.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53091836657775,"sku":"PSTN-0114-U1","price":52.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-bbk_783d13aa-cc9f-4f36-812e-b5bbc2149000.jpg?v=1778735095"},{"product_id":"80cc-big-bore-head-cylinder-kit-gy6-69mm","title":"80cc Big Bore Head \u0026 Cylinder Kit, GY6 69mm","description":"80cc Big Bore Kit with \u003cspan style=\"font-weight: bold; text-decoration: underline;\"\u003e69mm \u003c\/span\u003eValve Head Assembly\u003cdiv\u003eFor scooters with 139QMB or 139QMI engines Scooter \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eBefore ordering please ensure you order the BBK with the correct length Valves for your Head Assembly. You head should look like one of the 2 in the 2nd picture.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53091981099119,"sku":"PSTN-0104-U1","price":52.25,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-bbk_1b6db38b-1b12-49d6-930f-57cc43e8afcd.jpg?v=1778735874"},{"product_id":"100cc-big-bore-head-cylinder-kit-gy6-69mm","title":"100cc Big Bore Head \u0026 Cylinder Kit, GY6 69mm","description":"100cc Big Bore Kit with \u003cspan style=\"font-weight: bold; text-decoration: underline;\"\u003e69mm \u003c\/span\u003eValve Head Assembly\u003cdiv\u003eFor scooters with 139QMB or 139QMI engines Scooter \u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(255, 0, 0);\"\u003eBefore ordering please ensure you order the BBK with the correct length Valves for your Head Assembly. You head should look like one of the 2 in the 2nd picture.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53091986604143,"sku":"PSTN-0115-U1","price":49.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-bbk_602f4d79-bbc8-4df6-aaf4-5bdd8386a332.jpg?v=1778735890"},{"product_id":"180cc-big-bore-head-cylinder-kit-gy6","title":"180cc Big Bore Head \u0026 Cylinder Kit, GY6","description":"\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eIncludes:\u003c\/span\u003e\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eCylinder, 61 mm\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePiston\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eClips\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePiston pin\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eHead gasket and base gasket\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eHead \u003c\/span\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eBig valve non emissions head\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eA9 Camshaft\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003eHead comes with performance springs, retainers and keepers intake valve is 27 mm, exhaust is 23 mm. Performance A9 cam included. Your current cylinder must be style A for this kit to work. If the fins on your cylinder look different than the one in the picture then the kit may not work. May require the case to be milled. The OD of the bottom of the cylinder is 65 mm.\u003c\/span\u003e\u003c\/div\u003e\u003cdiv\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: verdana, arial, helvetica, sans-serif; font-size: 10pt; color: rgb(51, 51, 51);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePlease NOTE: If you open the gaskets, if you install the rings, if the kit is installed in anyway you CANNOT return it.\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cspan style=\"color: rgb(51, 51, 51); font-family: verdana, arial, helvetica, sans-serif; font-size: small; background-color: rgb(255, 255, 255);\"\u003ePlease be sure of what you're buying. Any returned kits will be subject to a 20% restocking charge.\u003c\/span\u003e\u003cspan style=\"font-family: verdana, arial, helvetica, sans-serif; font-size: 10pt; color: rgb(51, 51, 51);\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eCamshaft Timing \u0026amp; Valve Adjustment\u003c\/div\u003e\n\u003cdiv\u003e\u003col\u003e\n\u003cli\u003eSet the engine to TDC (piston is all the way at the top of the cylinder).\u003c\/li\u003e\n\u003col\u003e\n\u003cli\u003eRemove the spark plug and the small rubber plug on top of the flywheel cover, so that you can look down the hole at the fly wheel.\u003c\/li\u003e\n\u003cli\u003eUsing a 14mm socket, turn the fly wheel until you see the letter T on the fly wheel line up with a line that has been cast in the case.\u003c\/li\u003e\n\u003cli\u003eThe piston should now be at TDC.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cli\u003eThe camshaft will have one large hole at 12 o' clock and a small hole or line at 3 o' clock and 9 o' clock.\u003c\/li\u003e\n\u003cli\u003eSet the cam in the cradle with the large hole facing outward, and line the two small holes or line with the top of the cylinder head. (see fig 1.)\u003cimg src=\"https:\/\/www.monstergy6.com\/tech_cam_timing.JPG\" style=\"text-align: center;\"\u003e\n\u003c\/li\u003e\n\u003cli\u003eTilt the camshaft and slide the cam chain over the gear. \u003c\/li\u003e\n\u003cli\u003eUnlock the lock nut on the tappet. Using a feeler gauge adjust the valves to .004 mm clearance. Lock the lock nut into place.\u003c\/li\u003e\n\u003c\/ol\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092154048623,"sku":"PSTN-0120-U1","price":87.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-0120a.jpg?v=1778739363"},{"product_id":"47mm-big-bore-cylinder-head-with-piston-rings-rebuild-kit-for-bbk-80cc-4-stroke-gy6-qmb139-scooters-engines","title":"47mm Big Bore Cylinder Head with Piston Rings Rebuild Kit - for BBK 80cc 4-stroke GY6\/QMB139 Scooters Engines","description":"80cc Big Bore Kit This kit fits most Chinese Scooters\/Mopeds with 50cc, 60cc 4-Stroke GY6\/QMB139 engines.\u003cdiv\u003e\n\u003cbr\u003e\u003cdiv\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003eUpgrade your motorcycle engine with the \u003cspan style=\"font-weight: bold;\"\u003eRedCap 61mm Big Bore Cylinder Head and Piston Rings Rebuild Kit\u003c\/span\u003e, tailored for GY6 engines from 170cc to 200cc. Designed specifically for engines with 57mm stud spacing (Type K-Block), this kit is crafted from durable aluminum alloy for enhanced longevity and performance. Enjoy increased displacement and power, perfect for enthusiasts looking to boost their bike's capabilities. Ensure seamless installation and reliable operation with components built to withstand rigorous use and deliver optimal performance on the road.\u003c\/p\u003e\n\n\u003cul style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eComplete Big Bore Kit:\u003c\/span\u003e Enhance your engine with our Complete Big Bore Kit, featuring essential components for a comprehensive upgrade: cylinder, piston \u0026amp; ring set, wrist pin, circlips, head gasket, and base gasket. Designed for easy installation and optimized performance, this all-inclusive kit provides everything you need to elevate your engine’s power and efficiency. Ideal for enthusiasts seeking to maximize their vehicle’s performance potential.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eVersatile Design:\u003c\/span\u003e Versatile in design, our Complete Big Bore Kit is meticulously crafted to suit both 80cc 4-stroke GY6\/QMB139 engines, delivering substantial enhancements in power and performance. This kit provides a flexible solution to amplify your engine's capabilities. Enjoy noticeable gains in speed and efficiency with components tailored for precise fit and peak performance. Elevate your vehicle with our comprehensive kit.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eOptimal Performance: \u003c\/span\u003eAchieve peak performance with our Complete Big Bore Kit, seamlessly compatible with stock carburetors for straightforward installation and immediate performance upgrades. To optimize results, monitor your spark plug and consider utilizing larger jets to fully exploit performance and longevity benefits. This method finely tunes your engine, unlocking optimal power and efficiency gains. Providing it operates at its highest potential.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eCompatibility:\u003c\/span\u003e Our Complete Big Bore Kit is engineered to be compatible with a broad spectrum of Chinese scooters and mopeds, offering versatility across various models. Whether you ride a well-known brand or a lesser-known make, this kit provides effortless integration and improved performance. Benefit from a universal upgrade solution that accommodates diverse models, delivering the power and reliability you demand.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eGood Quality Components: \u003c\/span\u003eCrafted to exacting standards, our Complete Kit features high-quality components designed for durability, reliability, and extended lifespan of your scooter or moped engine. Each part is meticulously manufactured with precision and attention to detail, ensuring superior quality and performance. Rest assured that our upgrade will keep your ride running smoothly and reliably, providing consistent power and efficiency.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecs:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"font-size: 16px; list-style-position: outside; list-style-image: none; margin: 15px 0px; padding: 0px 0px 0px 40px; line-height: 1.6; color: rgb(51, 51, 51); font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDiameter:\u003c\/span\u003e 47mm (53.2mm)\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eIncluded:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"font-size: 16px; list-style-position: outside; list-style-image: none; margin: 15px 0px; padding: 0px 0px 0px 40px; line-height: 1.6; color: rgb(51, 51, 51); font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\n\u003cli\u003eCylinder\u003c\/li\u003e\n\u003cli\u003ePiston \u0026amp; Ring Set\u003c\/li\u003e\n\u003cli\u003eWrist Pin\u003c\/li\u003e\n\u003cli\u003eCirclips\u003c\/li\u003e\n\u003cli\u003eHead Gasket\u003c\/li\u003e\n\u003cli\u003eBase Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnown to Fit:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul style=\"font-size: 16px; list-style-position: outside; list-style-image: none; margin: 15px 0px; padding: 0px 0px 0px 40px; line-height: 1.6; color: rgb(51, 51, 51); font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cli\u003e80cc Big Bore Kit This kit fits most Chinese Scooters\/Mopeds with 50cc, 60cc 4-Stroke GY6\/QMB139 engines.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif; background-color: rgb(255, 255, 255);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eNote:\u003c\/span\u003e Please carefully check the goods' appearance, size, and shape and compare your original goods before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cbr\u003e\u003cdiv\u003eWhile this kit works with the stock carburetor, to get the best performance you should always read you spark plug to know if larger jets would give better performance and longevity to you big bore kit.\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"product.asp?itemid=1773\"\u003eClick this link for the a set of jets.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Piston ring order\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PistonRingOrder.jpg?v=1778741755\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e \u003c\/div\u003e","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092208181359,"sku":"CYLD-0079-U1","price":38.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/bigborekit_c92e44c7-2659-4bbf-8569-4531e21556c8.jpg?v=1778741765"},{"product_id":"big-bore-kit-69mm-valves-scooter-60cc-piston-ring-set-with-wrist-pin-and-cylinder","title":"Big Bore Kit-69mm Valves, Scooter 60cc Piston \u0026 Ring Set, with wrist pin and Cylinder","description":"Big Bore Kit-***69mm Valves***, Scooter 60cc Piston \u0026amp; Ring Set, with wrist pin and Cylinder","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092279418991,"sku":"PSTN-0095-U1","price":49.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PSTN-BBK_2445cd5a-e0d7-4fb5-9988-de76c2df7773.jpg?v=1778745626"},{"product_id":"big-bore-kit-64mm-valves-scooter-60cc-piston-ring-set-with-wrist-pin-and-cylinder","title":"Big Bore Kit-64mm Valves, Scooter 60cc Piston \u0026 Ring Set, with wrist pin and Cylinder","description":"Big Bore Kit-***64mm Valves***, Scooter 60cc Piston \u0026amp; Ring Set, with wrist pin and Cylinder","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092279844975,"sku":"PSTN-0096-U1","price":49.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PSTN-BBK_72d131d1-b971-4951-91f1-2b13f5f5587c.jpg?v=1778745642"},{"product_id":"180cc-big-bore-head-cylinder-kit-cam","title":"180cc Big Bore Head \u0026 Cylinder Kit,  Cam","description":"180cc Big Bore Head \u0026amp; Cylinder Kit,  Cam,\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv\u003eIncludes\u003c\/div\u003e\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003eHead\u003c\/li\u003e\n\u003cli\u003e61mm Cylinder\u003c\/li\u003e\n\u003cli\u003eCamshaft\u003c\/li\u003e\n\u003cli\u003ePiston\u003c\/li\u003e\n\u003cli\u003eRing Set\u003c\/li\u003e\n\u003cli\u003eWrist pin\u003c\/li\u003e\n\u003cli\u003eCirq clips\u003c\/li\u003e\n\u003cli\u003eGaskets\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092283744367,"sku":"PSTN-0122-U1","price":120.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PSTN-0122a.jpg?v=1778745691"},{"product_id":"egr-80cc-big-bore-head-cylinder-kit-gy6-64mm","title":"EGR -80cc Big Bore Head \u0026 Cylinder Kit, GY6 64mm","description":"\u003cdiv\u003e80cc Big Bore Kit This kit fits most Chinese Scooters\/Mopeds with 50cc, 60cc 4-Stroke GY6\/QMB139 engines.\u003cdiv\u003e\n\u003cbr\u003e\u003cdiv\u003eIncluded in this big bore set is:\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder\u003c\/li\u003e\n\u003cli\u003ePiston \u0026amp; Ring Set\u003c\/li\u003e\n\u003cli\u003eWrist Pin\u003c\/li\u003e\n\u003cli\u003eCirclips\u003c\/li\u003e\n\u003cli\u003eHead Gasket\u003c\/li\u003e\n\u003cli\u003eBase Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003eWhile this kit works with the stock carburetor, to get the best performance you should always read you spark plug to know if larger jets would give better performance and longevity to you big bore kit.\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/unitedexpressdist.3dcartstores.com\/product.asp?itemid=1773\"\u003eClick this link for the a set of jets.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Piston ring order\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PistonRingOrder.jpg?v=1778741755\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092285022319,"sku":"HEAD-0203+CYLD-0079","price":54.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0203_CYLD-0079_01.jpg?v=1778745736"},{"product_id":"egr-big-bore-head-cylinder-kit-for-gy6-scooter-69mm-valves-bbk-80cc-cylinder-piston-rings-wrist-pin-circlips-head-base-gaskets-fits-with-50cc-60cc-4-stroke-gy6-qmb139-engines","title":"EGR Big Bore Head \u0026 Cylinder Kit for GY6 Scooter 69mm Valves - BBK 80cc Cylinder, Piston, Rings, Wrist Pin, Circlips, Head \u0026 Base Gaskets - Fits with 50cc, 60cc, 4-Stroke GY6\/QMB139 Engines","description":"\u003cdiv\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eRedCap EGR Big Bore Head \u0026amp; Cylinder Kit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003eEGR Big Bore Head \u0026amp; Cylinder Kit - BBK 80cc GY6 Cylinder, Piston, Rings, Wrist Pin, Circlips, Head \u0026amp; Base Gaskets - Compatible with 50cc, 60cc, 4-Stroke GY6\/QMB139 Engines - GY6 Scooter 69mm Valves Head \u0026amp; Cylinder Kit - Includes Head and Base Gaskets\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eMain Features and Benefits:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003eUpgrade your scooter or moped with the \u003cspan style=\"font-weight: bold;\"\u003eRedCap BBK 80cc GY6 Big Bore Kit\u003c\/span\u003e, designed to enhance the performance of most Chinese scooters and mopeds with 50cc or 60cc 4-stroke GY6\/QMB139 engines. This comprehensive kit includes a cylinder, piston, ring set, wrist pin, circlips, head gasket, and base gasket, providing everything you need for a significant power boost. Compatible with the stock carburetor, this kit ensures optimal performance and longevity when larger jets are used as needed. Experience improved acceleration and top speed with this high-quality big bore kit.\u003c\/p\u003e\n\n\u003cul style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eCOMPLETE BIG BORE KIT:\u003c\/span\u003e Transform your engine with our Complete Big Bore Kit, which includes everything you need for a comprehensive upgrade: cylinder, piston \u0026amp; ring set, wrist pin, circlips, head gasket, and base gasket. Designed for seamless installation and superior performance, this all-in-one kit ensures you have all the necessary components to enhance your engine’s power and efficiency. Perfect for enthusiasts looking to boost their ride’s performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eVERSATILE DESIGN: \u003c\/span\u003eOur Complete Big Bore Kit is engineered to fit both 50cc and 60cc 4-stroke GY6\/QMB139 engines, offering significant power and performance improvements. This kit provides a versatile solution to enhance your engine's capabilities. Experience a noticeable boost in speed and efficiency with components specifically designed for a perfect fit and optimal performance. Elevate your ride with our comprehensive kit that brings versatility and power to your engine upgrade.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eOPTIMAL PERFORMANCE:\u003c\/span\u003e Our Complete Big Bore Kit is compatible with stock carburetors, ensuring easy installation and immediate performance enhancements. For the best results, read your spark plug and consider using larger jets to fully maximize performance and longevity. This approach fine-tunes your engine, providing optimal power and efficiency gains. Achieve the best possible outcome with our kit by making these small adjustments, ensuring your engine runs at peak performance.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eCOMPATIBILITY: \u003c\/span\u003eOur Complete Big Bore Kit is designed to work with most Chinese scooters and mopeds, making it a versatile choice for a wide range of models. Whether you own a popular brand or a lesser-known make, this kit ensures seamless integration and enhanced performance. Enjoy the convenience of a universal upgrade solution that fits various models, providing you with the power and reliability you need. Our kit is compatible with the majority of Chinese-engineered two-wheelers.\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan style=\"font-family: arial, sans-serif; color: rgb(51, 51, 51);\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eGOOD QUALITY COMPONENTS: \u003c\/span\u003eOur Complete Big Bore Kit is manufactured to high standards, ensuring durability, reliability, and a longer lifespan for your scooter or moped engine. Each component is crafted with precision and care, providing you with the quality and performance you expect. Enjoy peace of mind knowing that your engine upgrade is built to last, delivering consistent power and efficiency over time. keeping your ride running smoothly and reliably.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul style=\"font-size: 16px; list-style-position: outside; list-style-image: none; margin: 15px 0px; padding: 0px 0px 0px 40px; line-height: 1.6; color: rgb(51, 51, 51); font-family: arial, sans-serif;\"\u003e\n\u003cli\u003e\n\n\u003cp style=\"margin: 0px 0px 15px; overflow-wrap: break-word;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eIncluded in this big bore set are the following:\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003eCylinder\u003c\/li\u003e\n\u003cli\u003ePiston \u0026amp; Ring Set\u003c\/li\u003e\n\u003cli\u003eWrist Pin\u003c\/li\u003e\n\u003cli\u003eCirclips\u003c\/li\u003e\n\u003cli\u003eHead Gasket\u003c\/li\u003e\n\u003cli\u003eBase Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cdiv\u003e\n\u003cdiv\u003eWhile this kit works with the stock carburetor, to get the best performance you should always read you spark plug to know if larger jets would give better performance and longevity to you big bore kit.\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/unitedexpressdist.3dcartstores.com\/product.asp?itemid=1773\"\u003eClick this link for the a set of jets.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Piston ring order\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PistonRingOrder.jpg?v=1778741755\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092285349999,"sku":"HEAD-0204+CYLD-0079","price":54.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0204_CYLD-0079_01.jpg?v=1778745754"},{"product_id":"egr-100cc-big-bore-head-cylinder-kit-gy6-69mm","title":"EGR -100cc Big Bore Head \u0026 Cylinder Kit, GY6 69mm","description":"100cc Big Bore Kit This kit fits most Chinese Scooters\/Mopeds with 50cc, 60cc 4-Stroke GY6\/QMB139 engines.\u003cdiv\u003e\n\u003cbr\u003e\u003cdiv\u003eIncluded in this big bore set is:\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eCylinder\u003c\/li\u003e\n\u003cli\u003ePiston \u0026amp; Ring Set\u003c\/li\u003e\n\u003cli\u003eWrist Pin\u003c\/li\u003e\n\u003cli\u003eCirclips\u003c\/li\u003e\n\u003cli\u003eHead Gasket\u003c\/li\u003e\n\u003cli\u003eBase Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003eWhile this kit works with the stock carburetor, to get the best performance you should always read you spark plug to know if larger jets would give better performance and longevity to you big bore kit.\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/unitedexpressdist.3dcartstores.com\/product.asp?itemid=1773\"\u003eClick this link for the a set of jets.\u003c\/a\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cimg alt=\"Piston ring order\" border=\"0px\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/PistonRingOrder.jpg?v=1778741755\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092285743215,"sku":"HEAD-0215+CYLD-0100","price":54.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0204_CYLD-0079_01_42650496-fcef-4a63-91f0-28618900afc7.jpg?v=1778745770"},{"product_id":"piston-ring-set-61mm-180cc-gy6-engines","title":"Piston \u0026 Ring Set, 61mm, 180cc GY6 Engines","description":"\u003cp\u003ePiston \u0026amp; Ring Set for 180cc GY6 Engine ATV, Go Kart, UTV, Scooter, Moped \u0026amp; Dirt Bike\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePiston Diameter: 61mm \u003c\/li\u003e \u003cli\u003ePiston Height: 39mm\u003c\/li\u003e \u003cli\u003ePiston Pin Diameter: 15 mm\u003c\/li\u003e \u003cli\u003eFit for any Kandi, Kangdi 180cc GY6 Engine ATV, Go Kart \u003c\/li\u003e \u003cli\u003eFit for most Chinese 150cc GY6 Engine TVs, Go Karts, UTV, Scooter, Moped \u0026amp; Dirt Bike\u003c\/li\u003e \u003c\/ul\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53092641276015,"sku":"PSTN-0180","price":19.77,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/pstn-0057_4d5b7ddd-a95b-4834-a69f-14af67f59183.jpg?v=1778753616"},{"product_id":"timing-chain-guides-set-94-roller-47-links-gy6-169cc-170cc-200cc-gy6-61mm","title":"Timing Chain \u0026 Guides Set - 94 Roller 47 Links GY6 169cc 170cc 200cc GY6 61mm","description":"\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eTiming Chain \u0026amp; Guides Set - 94 Roller 47 Links GY6 169cc 170cc 200cc GY6 61mm\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eFor K-Block Engine with 57mm stud spacing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eDetails:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e94 Roller or 47 Link Timing Chain\u003c\/li\u003e\n\u003cli\u003e2 Piece Timing Chain Guide Sets\u003c\/li\u003e\n\u003cli\u003ePackage Include: 1 Timing Chain and a Pair of Timing Chain Guides.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKnown to Fit: Engine LF161QMK\u003c\/p\u003e\u003cp\u003eFor matching Head Gaskets click relate set below.\u003c\/p\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093379473519,"sku":"CHAN-0171-SET","price":16.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/CHAN-0171-SET_01.jpg?v=1778770358"},{"product_id":"61mm-big-bore-cylinder-head-assembly-gy6-169cc-200cc-57mm-stud-spacing-type-k-block-2-bolt-valve-cover","title":"61mm Big Bore Cylinder Head Assembly GY6 169cc 200cc 57mm Stud Spacing Type K-Block 2-Bolt Valve cover","description":"\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003e170cc GY6 K-Block 61mm Big Bore Cylinder Head Assembly for \u003c\/span\u003e\u003cspan style=\"font-weight: bold;\"\u003e169cc \u0026amp; 200cc Engines With 57mm Stud Spacing \u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eTYPE K-BLOCK VALVE \/ CYLINDER HEAD COVER (NOT FOR B-BLOCK)\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eMain Features and Benefits:\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eThis K-Block design 170cc GY6 61mm Big Bore Cylinder Head Assembly is for GY6 169cc and 200cc engines with 57mm stud spacing.\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eKey Features:\u003c\/span\u003e \u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eK-Block Engine Cylinder Head with super quality.\u003c\/li\u003e\n\u003cli\u003eThe piston bore diameter is 61mm, which perfectly replaces your old or damaged one.\u003c\/li\u003e\n\u003cli\u003eAssist in improving the thermal efficiency, supporting the piston, and reducing friction and leakage.\u003c\/li\u003e\n\u003cli\u003eMade from premium aluminum alloy material, it is durable and reliable.\u003c\/li\u003e\n\u003cli\u003eComes with a complete cylinder kit, easy to install, fit for GY6 170cc 200cc engines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eDetails:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePiston Bore Diameter: 61mm\u003c\/li\u003e\n\u003cli\u003eStud Spacing: 57mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnown to Fit:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine LF161QMK, TANK 200, TaoTao Bull 200\u003c\/li\u003e\n\u003cli\u003eTank 200, Clash 200 Scooter\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003ePackage Includes:\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003e1 - Cylinder Head with Valves installed\u003c\/p\u003e","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093401722991,"sku":"HEAD-0171","price":64.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0171_10.jpg?v=1778770669"},{"product_id":"52-4mm-bore-cylinder-head-for-4-stroke-110cc-90cc-atv-dirt-bike-go-kart-engine","title":"52.4mm Bore Cylinder Head for 4-Stroke 110cc 90cc ATV Dirt Bike Go Kart Engine","description":"\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003eUpgrade your engine’s performance with the \u003cspan style=\"font-weight: bold;\"\u003eRedCap Complete Cylinder Head\u003c\/span\u003e, designed for 90cc and 110cc 4-stroke engines. This brand-new assembly includes pre-installed valves, camshaft, covers, and caps, ready for immediate installation. With a 52.4mm bore size, it ensures optimal combustion efficiency and smooth engine operation. Whether you're riding ATVs, go-karts, dirt bikes, mini-choppers, or motorcycles, this complete cylinder head is engineered for reliability and built to handle rugged use.\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003eFeaturing a 23mm intake port and 20mm exhaust port, this head delivers improved airflow and combustion, enhancing overall power output and throttle response. Built to fit a wide range of Chinese engines, including brands like TaoTao, Roketa, Coolster, Sunl, Kazuma, Lifan, Zongshen, and many more, this component is ideal for replacing worn-out or damaged heads. Precision-machined and constructed from high-grade materials, it ensures long-lasting durability and performance in any off-road or on-road condition.\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eComplete Cylinder Head Kit:\u003c\/span\u003e The RedCap Complete Cylinder Head includes everything you need: valves, camshaft, covers, caps, and even a free head gasket set for a smooth and efficient installation. It’s a full assembly replacement that saves time, ensures compatibility, and revives your 4-stroke 110cc or 90cc engine with minimal hassle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eCompatible with: \u003c\/span\u003eThis cylinder head fits a wide variety of Chinese ATVs, Dirt Bikes, and Go-Karts including TaoTao, Roketa, Coolster, Sunl, Kazuma, Lifan, Ice Bear, and many more. Whether you're replacing a damaged part or upgrading for better performance, RedCap offers the quality and compatibility you can trust.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003ePrecision Fit: \u003c\/span\u003eKey specifications include a 22mm intake port, 20mm exhaust port, 28T timing sprocket, and M6-1.00 exhaust stud holes. These precise dimensions ensure a direct OEM-style fit for most 50cc-125cc Chinese-made engines and simplify the installation process without the need for modifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eBoost Engine Performance: \u003c\/span\u003eDesigned to deliver powerful upgrades to your engine’s performance, this 52.4mm bore cylinder head enhances combustion, supports better oil efficiency, and improves heat dissipation. Expect a stronger throttle response, improved RPM stability, and long-term durability whether off-roading or cruising.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003ePremium-Quality: \u003c\/span\u003eConstructed from high-grade alloy materials, this RedCap cylinder head offers excellent corrosion and wear resistance. Its heavy-duty structure is built to withstand extreme operating conditions, delivering consistent reliability for your ATV, Go-Kart, Dirt Bike, Mini-Chopper, or motorcycle.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecification:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eIntake Port Diameter:\u003c\/span\u003e 22mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eExhaust Port Diameter: \u003c\/span\u003e20mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eTiming Sprocket: \u003c\/span\u003e28T\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eExhaust Stud Hole Size: \u003c\/span\u003eM6-1.00\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnow to Fit:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\u003cli\u003eFor Chinese 110cc and 90cc 4-Stroke Engine ATVs, Go-Karts, Dirt Bikes, Mini-Choppers, and Motorcycles\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eNOTE:\u003c\/span\u003e Before buying, please check the size and model.Avoid buying wrong parts.\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093613731951,"sku":"HEAD-0001","price":52.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0001_01_55506171-1dcc-4080-9d61-457d75e0cbf1.jpg?v=1778774750"},{"product_id":"bbk-bottom-end-only-61mm-gy6-180cc-piston-ring-set-with-wrist-pin-and-cylinder","title":"BBK Bottom End ONLY- 61mm GY6 180cc Piston \u0026 Ring Set, with wrist pin and Cylinder","description":"\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\n\u003cdiv\u003eUpgrade your scooter, ATV, or moped with th\u003cspan style=\"font-weight: bold;\"\u003ee RedCap 61mm Big Bore Cylinder Piston Kit, \u003c\/span\u003eengineered to deliver serious performance gains for GY6 125cc and 150cc engines. Whether you're restoring lost power or chasing higher torque and speed, this 180cc BBK bottom-end kit is built to take your ride to the next level. Precision-crafted from high-quality, heat-resistant materials, it features a 61mm piston and cylinder with a 54mm stud spacing and 64mm outer sleeve diameter—ensuring optimal fitment, heat dissipation, and long-term durability under high RPMs and heavy loads. With improved compression and enhanced combustion efficiency, this upgrade gives you smoother throttle response, better acceleration, and overall enhanced ride quality.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis all-in-one RedCap piston \u0026amp; ring set includes a 61mm piston, matching cylinder, wrist pin, circlips, and both head and base gaskets—everything you need for a hassle-free bottom-end engine rebuild or upgrade. Perfect for a wide range of Chinese-made GY6 4-stroke engines found in scooters, mopeds, and ATVs from brands like TaoTao, Roketa, Coolster, and more, it’s designed for easy installation and dependable performance. Just make sure to verify your engine’s cylinder fin configuration and measurements to ensure compatibility. With RedCap's trusted engineering, this kit offers a reliable and affordable path to better power, cooler operation, and longer engine life.\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003ePerfect Fit: \u003c\/span\u003eEngineered with precision to match most GY6 125cc and 150cc 4-stroke engines, this RedCap 61mm Big Bore Kit features a 54mm stud spacing and 61mm inner sleeve diameter. It ensures a snug, secure fit for reliable compression and optimal combustion, giving your engine the power boost it needs without hassle.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eWide Compatibility: \u003c\/span\u003eDesigned for a wide range of Chinese scooters, ATVs, go-karts, and mopeds, this kit fits engines found in TaoTao, Roketa, Coolster, Apollo, Sunl, Lifan, and more. With universal 54mm stud spacing and GY6 platform alignment, it offers versatile compatibility—perfect for both casual riders and professional tuners.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eEngine Rebuild Kit: \u003c\/span\u003eThis RedCap 180cc Big Bore Kit is your complete bottom-end rebuild solution, perfect for restoring lost power or achieving higher torque and speed. With accurate specs (54mm stud spacing, 61mm ID, 64mm OD), it's an ideal upgrade for GY6 125cc\/150cc scooters and ATVs aiming for smoother, more powerful performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDurable Construction: \u003c\/span\u003eCrafted from premium heat-resistant materials, the RedCap piston \u0026amp; cylinder kit offers long-lasting durability even under extreme riding conditions. The robust cylinder sleeve and finely machined piston are built to withstand high RPMs and thermal stress, ensuring consistent engine performance and longevity.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eEasy Installation:\u003c\/span\u003e Whether you're a seasoned mechanic or a confident DIYer, this bottom-end upgrade kit is designed for easy installation with no special tools required. The all-in-one package includes the 61mm piston, cylinder, wrist pin, circlips, and gaskets, everything needed to rebuild or upgrade your GY6 engine quickly and efficiently.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecs:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eStud Spacing:\u003c\/span\u003e 54mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eCylinder Sleeve ID: \u003c\/span\u003e61 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eCylinder Sleeve OD: \u003c\/span\u003e64 mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eIncludes:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\u003cli\u003eCylinder, 61 mm piston, clips, piston pin, head gasket, and base gasket\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093622513775,"sku":"CYLD-0180","price":45.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/cyld-0180_01.jpg?v=1778775126"},{"product_id":"cylinder-head-62mm-for-200cc-gy6-efi-engine-b-block","title":"Cylinder Head 62mm for 200cc GY6 EFI Engine - B Block","description":"\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003eThe \u003cspan style=\"font-weight: bold;\"\u003eRedCap 170cc GY6 62mm Big Bore Cylinder Head Assembly\u003c\/span\u003e is engineered for GY6 169cc and 200cc engines with 57mm stud spacing. Designed with a B-Block valve, this high-quality cylinder head assembly offers superior performance for 170cc, 180cc, and 200cc engines, including those found in popular models like the TaoTao Bull 200 and TANK 200. The 62mm piston bore diameter ensures a precise fit and enhances combustion efficiency, improving engine power and performance. This assembly helps reduce friction and leakage, supporting the piston while improving thermal efficiency, making it an ideal upgrade for both everyday use and high-performance demands.\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003eCrafted from premium aluminum alloy, this durable cylinder head assembly is built to withstand heat and heavy use, ensuring long-lasting reliability. The complete cylinder kit comes with the cylinder head and pre-installed valves for easy installation, providing a hassle-free upgrade for your engine. Perfect for restoring or improving the performance of your GY6 170cc-200cc engine, this B-Block design cylinder head is an essential component for maintaining optimal engine function. With its compatibility with a range of engines, including the 200cc Apollo Go Kart Batman, it offers a seamless fit and dependable performance for various off-road and recreational vehicles.\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eComplete Cylinder Kit: \u003c\/span\u003eThis complete cylinder kit includes the head with valves installed, making installation straightforward and hassle-free. Compatible with GY6 170cc, 180cc, and 200cc engines, it’s perfect for those looking to restore or upgrade their engine with minimal downtime. Whether replacing a damaged part or upgrading for better performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003ePerfect Fit for 57mm Stud Spacing: \u003c\/span\u003eDesigned to fit engines with a 57mm stud spacing, this cylinder head assembly provides an accurate and safe fit for GY6 170cc, 180cc, and 200cc engines, including popular models like TaoTao Bull 200 and TANK 200. It ensures compatibility, easy installation, and reliable performance with minimal modifications required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eB-Block Valve Design: \u003c\/span\u003eUpgrade your GY6 170cc, 180cc, and 200cc EFI engines with this high-performance B-Block valve design cylinder head. Designed for superior airflow and improved combustion, it helps improve engine efficiency, reduce overheating, and increase overall performance, making it a must-have for your gy6 engine.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDurable 62mm Piston Bore:\u003c\/span\u003e The 62mm piston bore diameter offers a perfect fit for your existing GY6 engine, ensuring seamless integration and reliable power delivery. This durable cylinder head enhances combustion efficiency, increases horsepower, and supports smooth operation for long-lasting engine performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eAluminum Alloy Construction: \u003c\/span\u003eBuilt from high-quality aluminum alloy, this cylinder head assembly is engineered to withstand extreme heat and heavy use. Offering exceptional durability and reliability, it reduces wear and tear on the engine, ensuring that the engine operates efficiently under various conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-weight: bold;\"\u003eDetails:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\n\u003cli\u003ePiston Bore Diameter: 62mm\u003c\/li\u003e\n\u003cli\u003eStud Spacing: 57mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnown to Fit:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\u003cli\u003e200cc Apollo Go Kart Batman\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-weight: bold;\"\u003ePackage Includes:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\u003cli\u003eCylinder Head with Valves installed\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eNOTE: \u003c\/span\u003ePlease Be Carefully Check The Goods Appearance, Size, Shape Before Ordering.\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093667012719,"sku":"HEAD-0301","price":79.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0301_01.jpg?v=1778776178"},{"product_id":"camshaft-for-cylinder-head-62mm-for-200cc-gy6-efi-engine-b-block","title":"Camshaft for Cylinder Head 62mm for 200cc GY6 EFI Engine - B Block","description":"\u003cp\u003e\u003cstrong\u003e170cc GY6 B-Block 62mm Big Bore Cylinder Head Assembly for 169cc \u0026amp; 200cc Engines With 57mm Stud Spacing\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003eTYPE B-BLOCK VALVE COVER \/ CYLINDER HEAD COVER (NOT FOR K-BLOCK)\u003c\/p\u003e\u003cp\u003eMain Features and Benefits:\u003c\/p\u003e\u003cp\u003eThis B-Block design 170cc GY6 62mm Big Bore Cylinder Head Assembly is for GY6 169cc and 200cc engines with 57mm stud spacing.\u003c\/p\u003e\u003cp\u003eKey Features:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eB-Block Engine Cylinder Head with super quality.\u003c\/li\u003e\n\u003cli\u003eThe piston bore diameter is 62mm, which perfectly replaces your old or damaged one.\u003c\/li\u003e\n\u003cli\u003eAssist in improving the thermal efficiency, supporting the piston, and reducing friction and leakage.\u003c\/li\u003e\n\u003cli\u003eMade from premium aluminum alloy material, it is durable and reliable.\u003c\/li\u003e\n\u003cli\u003eComes with a complete cylinder kit, easy to install, fit for GY6 170cc 200cc engines.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eDetails:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003ePiston Bore Diameter: 62mm\u003c\/li\u003e\n\u003cli\u003eStud Spacing: 57mm\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eKnown to Fit:\u003c\/p\u003e\u003cul\u003e\u003cli\u003e200cc Apollo Go Kart Batman\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003ePackage Includes:\u003c\/p\u003e\u003cp\u003e1 - Cylinder Head with Valves installed\u003c\/p\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093675401327,"sku":"HEAD-0302","price":25.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0302_01.jpg?v=1778776462"},{"product_id":"rocker-arm-assembly-for-200cc-63mm-gy6-efi-b-block-engine","title":"Rocker Arm Assembly for 200cc 63mm GY6 EFI B-Block Engine","description":"\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003eThe \u003cspan style=\"font-weight: bold;\"\u003e63mm Engine Rocker Arms Camshaft Holder Assembly\u003c\/span\u003e is designed specifically for 200cc GY6 EFI B-Block engines, offering a high-performance solution for riders looking to maintain or upgrade their engine’s valve system. Precision-engineered for durability and reliable performance, this rocker arm assembly ensures smooth valve movement, reduced friction, and efficient engine operation. With a 63mm bore size, it is perfectly suited for 170cc to 200cc GY6 B-Block engines commonly found in high-displacement scooters, mopeds, ATVs, and go-karts.\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003eCompatible with B-Block engine variants from well-known brands such as TaoTao, Roketa, Jonway, Baja, SunL, and Coolster, this camshaft holder and rocker arm assembly offers a direct fit replacement without the need for modification. Whether you're rebuilding your engine or replacing worn-out components, the rocker arm assembly provides the strength, fitment, and performance needed for demanding rides. It’s an ideal upgrade for enthusiasts and mechanics who want to ensure peak engine reliability in larger GY6-powered vehicles.\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eHeavy-Duty Rocker Arm Assembly:\u003c\/span\u003e This rocker arms camshaft holder assembly is designed specifically for 63mm 200cc GY6 EFI B-Block engines. Built from durable materials for high heat and stress resistance, it ensures consistent valve timing and top-end engine reliability for your scooter, moped, or ATV.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eFit for GY6 EFI B-Block Engines: \u003c\/span\u003eCompatible with most 170cc to 200cc GY6 B-Block EFI engines, this rocker arm assembly offers a secure fit and seamless performance. Ideal for replacing worn or damaged camshaft holders on TaoTao, Jonway, Roketa, SunL, Coolster, Baja, and other Chinese-made go-karts and mopeds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eHigh-Performance EFI Systems:\u003c\/span\u003e Engineered to meet the demands of fuel-injected (EFI) systems, this camshaft holder enhances engine timing, improves throttle response, and supports high-RPM performance. A must-have component for keeping your GY6 engine running smooth under intense riding conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eReliable Valve Operation: \u003c\/span\u003eWith precision-machined rocker arms and a reinforced camshaft holder, this assembly guarantees consistent valve movement and superior durability. The robust construction helps maintain engine compression and withstands prolonged exposure to high temperatures and engine vibrations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eEasy Replacement: \u003c\/span\u003eWhether you're restoring an ATV or upgrading your scooter’s engine, this plug-and-play rocker arm assembly installs easily with basic tools. Save time and money by avoiding complicated adjustments_just bolt it in and enjoy improved engine performance and longevity.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnown to Fits:\u003c\/span\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cul\u003e\u003cli\u003eFits 170cc-200cc GY6 B-Block Engines\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eNote: \u003c\/span\u003eTo ensure you are ordering the correct part use the detailed pictures \u0026amp; measurements to verify the exact match of your part.\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093698306159,"sku":"HEAD-0312","price":29.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0312_01.jpg?v=1778777468"},{"product_id":"valve-cover-gasket-gy6-169cc-200cc-57mm-stud-spacing-type-k-block-2-bolt-valve-cover","title":"Valve Cover Gasket - GY6 169cc 200cc 57mm Stud Spacing Type K-Block 2-Bolt Valve Cover","description":"\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eValve Cover Gasket - GY6 169cc 200cc 57mm Stud Spacing Type K-Block 2-Bolt Valve Cover\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eTYPE K-BLOCK VALVE \/ CYLINDER HEAD COVER (NOT FOR B-BLOCK)\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eMain Features and Benefits:\u003c\/span\u003e\u003c\/p\u003e\u003cp\u003eThis K-Block design 170cc GY6 61mm Big Bore Cylinder Head Assembly is for GY6 169cc and 200cc engines with 57mm stud spacing.\u003c\/p\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eDetails:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eFor GY6 170cc 200cc K-Block Engine\u003c\/li\u003e\u003c\/ul\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnown to Fit:\u003c\/span\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eEngine LF161QMK, TANK 200, TaoTao Bull 200\u003c\/li\u003e\n\u003cli\u003eTank 200, Clash 200 Scooter\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093699813487,"sku":"GSKT-0173","price":9.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/GSKT-0173_01.jpg?v=1778777534"},{"product_id":"egr-big-bore-head-cylinder-kit-for-gy6-scooter-69mm-valves-bbk-80cc-cylinder-piston-rings-wrist-pin-circlips-head-base-gaskets","title":"EGR Big Bore Head \u0026 Cylinder Kit for GY6 Scooter 69mm Valves - BBK 80cc Cylinder, Piston, Rings, Wrist Pin, Circlips, Head \u0026 Base Gaskets -","description":"\u003cdiv\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eRedCap EGR Big Bore Head \u0026amp; Cylinder Kit\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003eEGR Big Bore Cylinder Head Assembly - BBK 80cc GY6 Cylinder, Piston, Rings, Wrist Pin, Circlips, Head \u0026amp; Base Gaskets - Compatible with 50cc, 60cc, 4-Stroke GY6\/QMB139 Engines - GY6 Scooter 69mm Valves Cylinder Head - Includes Head and Base Gaskets\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eMain Features and Benefits:\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 16px; margin: 0px 0px 15px; color: rgb(51, 51, 51); overflow-wrap: break-word; font-family: arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003e80cc cylinder head for GY6 Big Bore\u003c\/span\u003e, \u003c\/p\u003e\n\u003cul style=\"font-size: 16px; list-style-position: outside; list-style-image: none; margin: 15px 0px; padding: 0px 0px 0px 40px; line-height: 1.6; color: rgb(51, 51, 51); font-family: arial, sans-serif;\"\u003e\n\u003cli\u003e\u003cspan style=\"font-weight: bold;\"\u003eIncluded in this big bore set are the following:\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003eCylinder Head\u003c\/li\u003e\n\u003cli\u003eHead Gasket\u003c\/li\u003e\n\u003cli\u003eBase Gasket\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\n\u003cdiv\u003eWhile this kit works with the stock carburetor, to get the best performance you should always read you spark plug to know if larger jets would give better performance and longevity to you big bore kit.\u003c\/div\u003e\n\u003cdiv\u003e\u003ca href=\"https:\/\/unitedexpressdist.3dcartstores.com\/product.asp?itemid=1773\"\u003eClick this link for the a set of jets.\u003c\/a\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093700829295,"sku":"HEAD-0204","price":29.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/HEAD-0204_01_e2d83ac8-4209-435e-8f76-667caa87a3df.jpg?v=1778777586"},{"product_id":"front-drive-variator-clutch-assembly-21-spline-for-b-block-engine-1p63qml-200cc-kandi-kd-200gkm-2-batman","title":"Front Drive Variator Clutch Assembly 21 Spline for B-Block Engine 1P63QML - 200cc Kandi KD-200GKM-2 Batman","description":"\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003eThe RedCap Front Drive Variator Clutch Assembly is a complete replacement kit designed for GY6 170cc to 200cc CVT automatic engines with reverse, specifically the 1P63QML and 163TG models. Built with precision and engineered to OEM specifications, this variator ensures smooth acceleration, efficient power transfer, and consistent performance under demanding conditions. With a 21-tooth spline shaft and a 122mm variator face diameter, it fits securely and operates seamlessly within the drivetrain system, reducing wear and optimizing torque delivery.\u003c\/div\u003e\n\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003ePerfect for replacing worn-out or damaged variators in a wide range of vehicles, this assembly is compatible with several go-karts and ATVs, including Apollo 200 Go Kart Batman, TaoTao Arrow 200, Bull 200, Raptor 200, Targa 200, 4FUN models, as well as Snow Fox and Snow Leopard snowmobiles. Whether you're restoring performance or upgrading your transmission, this variator is built from durable materials to ensure long-lasting use and reliable function in rugged terrain or everyday riding conditions.\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003ePerfect Fit:\u003c\/span\u003e Specifically engineered for the 1P63QML and 163TG engines, this front drive variator clutch assembly offers a precise fit for GY6 170cc and 200cc automatic CVT engines. Compatible with popular go-karts like Apollo 200 and TaoTao models, including Arrow 200, Bull 200, and Raptor 200, it ensures consistent and reliable performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eWide Compatibility: \u003c\/span\u003eThis variator is known to fit a wide range of vehicles, from Apollo Batman go-karts to TaoTao Targa 200 and even Snow Fox snowmobiles. Its versatile compatibility with ATVs, go-karts, and snowmobiles makes it an ideal replacement part for restoring smooth transmission function across different vehicle types.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDurable Construction: \u003c\/span\u003eCrafted from high-quality materials with a 21-tooth spline shaft and precision-machined components, this variator is built to withstand daily wear and tear. The 15mm center hole and 122mm variator face diameter ensure perfect alignment and long-lasting durability under various riding conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eOptimized Transmission: \u003c\/span\u003eDesigned for automatic CVT systems with reverse, this variator clutch assembly delivers smooth shifting and optimal power transfer. Its advanced design allows for efficient engagement and acceleration, helping to maximize torque delivery and riding comfort on both flat roads and rough terrain\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eEasy Installation: \u003c\/span\u003eThis kit includes the drive face, variator face, variator boss, and pins—everything you need for a straightforward installation. With dimensions like a 50mm boss length and 17mm pin ID, it eliminates compatibility guesswork, saving time for both DIY mechanics and professionals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003eNOTE: There are 3 variator that are similar. Check the number of splines and engine model number.\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eVariator details:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDrive face center hole: \u003c\/span\u003e21 teeth (spline shaft)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDrive face hole diameter:\u003c\/span\u003e 15mm (0.59 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDrive face diameter:\u003c\/span\u003e 122mm (4.8 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eVariator face diameter:\u003c\/span\u003e 122mm ( 4.8 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eVariator Boss length: \u003c\/span\u003e50mm (2.00 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eVariator Pin ID: \u003c\/span\u003e17mm (0. in)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eKnown to fit:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv style=\"font-family: 'Market Sans', Arial, sans-serif;\"\u003e\n\u003cul\u003e\n\u003cli\u003eEngine 1P63QML, 163TG\u003c\/li\u003e\n\u003cli\u003eApollo 200 Go Kart Batman\u003c\/li\u003e\n\u003cli\u003eTao Tao Arrow 200, Bull 200, Raptor 200, Targa 200\u003c\/li\u003e\n\u003cli\u003e4FUN 200 atvs and go-karts.\u003c\/li\u003e\n\u003cli\u003eSnow Fox and Snow Leopard snowmobiles.\u003c\/li\u003e\n\u003cli\u003e2008 Longbo LB150T-26 Prodigy Scooter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093730320495,"sku":"CLTC-0200","price":49.97,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/CLTC-0200_01.jpg?v=1778778143"},{"product_id":"100cc-big-bore-kit-gy6-49cc-50cc-139qmb-moped-scooter-engine-50mm-bore-upgrade-set-cylinder-only","title":"100cc Big Bore Kit GY6 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set Cylinder Only","description":"\u003cdiv style='font-family: \"Market Sans\", Arial, sans-serif;'\u003e\u003cspan style=\"font-family: proximasoft-regular; font-size: 14px; background-color: rgb(255, 255, 255);\"\u003e100cc Big Bore Kit GY6 49CC 50CC 139QMB Moped Scooter Engine 50mm Bore Upgrade Set Cylinder Only\u003c\/span\u003e\u003c\/div\u003e ","brand":"United Express Distribution","offers":[{"title":"Default Title","offer_id":53093759221871,"sku":"CYLD-0100+HEAD-1069","price":56.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/files\/CYLD-0100HEAD-1069_01.jpg?v=1778778806"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/0368\/1391\/collections\/pstn-bbk_thumbnail.jpg?v=1778169398","url":"https:\/\/uedist.com\/collections\/big-bore-head-cylinder-kits-gy6.oembed","provider":"United Express Distribution","version":"1.0","type":"link"}