47mm Big Bore Cylinder Kit with Piston Rings Gaskets for 139QMB QMB139 QMI139 4-Stroke GY6 50cc Scooters 80cc 100cc
47mm Big Bore Cylinder Kit with Piston Rings Gaskets for 139QMB QMB139 QMI139 4-Stroke GY6 50cc Scooters 80cc 100cc is backordered and will ship as soon as it is back in stock.
Pickup available at 2875 N Berkeley Lake Rd NW #4
Usually ready in 1 hour
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47mm Big Bore Cylinder Kit with Piston Rings Gaskets for 139QMB QMB...
47mm Big Bore Cylinder Kit with Piston Rings Gaskets for 139QMB QMB139 QMI139 4-Stroke GY6 50cc Scooters 80cc 100cc is backordered and will ship as soon as it is back in stock.
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Description
Description
- Perfect Fit: Engineered with precision to ensure a snug and secure fit for GY6/QMB139 engines. The 47mm cylinder provides increased power without compromising structural integrity, delivering smoother operation, better acceleration, and improved combustion. A reliable upgrade for restoring or boosting your engine.
- Wide Compatibility: Designed for a wide range of Chinese scooters, mopeds, ATVs, and go-karts, the RedCap Big Bore Kit fits most 4-stroke GY6 or 139QMB engine models from 50cc to 80cc. Compatible with brands like YERFDOG, SUNL, SYM, PGO, KYMCO, VENTO, STRADA, ROKETA, and more, ensuring versatility for countless vehicle types.
- Engine Upgrade: Boost your scooter or moped's power and efficiency with the RedCap 47mm Big Bore Kit. Designed for 50cc to 80cc 4-stroke GY6/QMB139 engines, this kit increases engine displacement, delivering better throttle response, smoother operation, and more horsepower for everyday riding or performance upgrades.
- Durable Construction: Crafted from premium-grade aluminum alloy, this rebuild kit offers exceptional durability, heat resistance, and wear tolerance. Each component is precision-machined to meet or exceed OEM standards, providing long-lasting reliability and enhanced engine life, even in demanding riding conditions.
- Easy Installation: Cylinder block, piston, ring set, circlips, piston pin, and gaskets. The user-friendly design ensures a smooth installation process, whether you're a DIY mechanic or a professional. Works seamlessly with stock carburetors for instant performance gains.
- Cylinder Bore Size: 47mm
- 1x Cylinder Block.
- 1x Piston.
- 1x Complete Ring Set.
- 2x Cirq clips.
- 1x Piston Pin.
- 2x Head Gasket Set.
- Fits many models such as YERFDOG, SUNL, SYM, PGO, KYMCO, VENTO, STRADA, ROKETA, FUJI, WILDFIRE, KAZUMA 80cc Big Bore Kit. This kit fits most Chinese Scooters/Mopeds with 50cc, 60cc 4-Stroke GY6/QMB139 engines.
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