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United Express Distribution  |  SKU: HEAD-0001

52.4mm Bore Cylinder Head for 4-Stroke 90cc-110cc ATV, Dirt Bike and Go-Kart Engines

Regular price $52.97


Pickup available at 2875 N Berkeley Lake Rd NW #4

Usually ready in 1 hour

Will it fit your machine?

Not sure? Text or email a photo of your old part or your engine model number. We'll confirm it fits before you buy.

Delivery and Shipping

Ships from our Duluth, Georgia warehouse.

Most in-stock orders ship the same business day. UPS orders placed before 3:00 PM ET, USPS orders before 12:00 PM ET. After the cutoff, they go out the next business day.

Standard delivery runs 2 to 6 business days to most US addresses. US territories take 7 to 14. These are carrier estimates, not guarantees.

Free shipping on most parts, no minimum order. Oversized items (body kits, wheels, tires, batteries, and engines) are quoted to your address and shown at checkout before you pay.

We ship UPS and USPS, and email your tracking number as soon as the order leaves.

Questions? Call or text 404-532-9833. Full details on our Shipping page.

Description

Upgrade your engine’s performance with the RedCap Complete Cylinder Head, 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.

Featuring 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.
  • Complete Cylinder Head Kit: 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.
  • Compatible with: This 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.
  • Precision Fit: Key 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.
  • Boost Engine Performance: Designed 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.
  • Premium-Quality: Constructed 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.
Specification:
  • Intake Port Diameter: 22mm
  • Exhaust Port Diameter: 20mm
  • Timing Sprocket: 28T
  • Exhaust Stud Hole Size: M6-1.00
Know to Fit:
  • For Chinese 110cc and 90cc 4-Stroke Engine ATVs, Go-Karts, Dirt Bikes, Mini-Choppers, and Motorcycles
NOTE: Before buying, please check the size and model.Avoid buying wrong parts.

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