Automotive replacement part designed to restore compression and reliable starting for small 4-stroke engines. Ideal for riders who need a straightforward repair that matches common 110cc Taotao and Coolster fittings. Is the WOOSTAR Cylinder Head Assembly the right fit for your engine?
⚡ At a Glance
- • Compression Performance: Accurate 52.4mm bore and matching 52mm piston diameter produce solid compression, helping engines fire more readily.
- • Best for: Owners of 110cc Taotao, Coolster and similar Chinese-made ATVs, go-karts and dirt bikes needing a direct replacement head.
- • Not ideal for: Applications requiring 125cc cylinder heads with larger valve arrangements, specifically 23mm and 28mm intake/exhaust valves.
Specified bore, valve and mounting dimensions match many 110cc Chinese engines. Compatibility is wide among listed models, though 125cc heads are excluded.
Easier Starting and Steadier Idle – With matched 52.4mm bore and 52mm piston
Accurate cylinder diameter and piston fit create correct compression ratios, while valve dimensions control combustion chamber volume. Mounting hole spacing and pin sizes maintain correct alignment during installation.
Improved compression helps engines start more readily and hold a steadier idle after repair. Fewer kickstarts and less choke adjustment required during break-in.
Straightforward Fitment for Common 110cc Engines – Thanks to specified mounting and valve dimensions
Mounting hole distance of 49mm and hole diameter of 8mm match many 110cc head patterns; intake valve 23mm and exhaust valve 20mm align with common valve trains. Piston pin length and diameter are listed for checking rod and connecting fit.
Quick identification of fit reduces trial-and-error during repairs, so installation time is lower for compatible Taotao, SSR and Coolster engines. Clear sizing helps avoid incompatible swaps.
Repair Kit Convenience – With included piston ring kit and timing sprocket specification
Assembly is supplied alongside a piston ring kit and lists a 28-tooth timing drive sprocket, enabling immediate reassembly after head replacement. Detailed dimensional specs allow confirmation against pictures and existing parts.
Having rings included reduces parts sourcing and workshop visits, allowing most small repairs to be completed in a single session. Timing sprocket note aids fit checks for chain-driven systems.
✨ The 4 Key Reasons for WOOSTAR Cylinder Head Assembly
- Compatibility list, matches many popular 110cc models for straightforward installation
- Precise bore and piston sizing, reduces compression loss and improves starting reliability
- Defined valve dimensions, helps ensure correct combustion and valve clearance
- Piston ring kit included, cuts parts sourcing and speeds up repair time
📋 Technical Details at a Glance
- Category: Cylinder head assembly with piston ring kit
- Fitment: Replacement for Taotao 110, SSR 110, Kazuma Falcon 110, Panda 100, Coyote 110, Redcat 110, Roketa 110, BMS 110, Sunl 110, Coolster 110
- Not compatible with: 125cc cylinder heads with 23mm and 28mm valves
- Cylinder diameter: 52.4mm / 2.1"
- Piston diameter: 52mm / 2.0"
❓ Frequently Asked Questions
Q: Which engines is this head compatible with?
A: Replacement compatibility is listed for many 110cc Chinese models including Taotao 110, SSR 110, Kazuma Falcon 110, Panda 100, Coyote 110, Redcat 110, Roketa 110, BMS 110, Sunl 110 and Coolster 110. Always verify model number and dimensions before ordering.
Q: Can this replace a 125cc cylinder head?
A: No, it is not a replacement for 125cc heads that use 23mm and 28mm intake and exhaust valve sizes.
Q: What measurements should I check before fitting?
A: Confirm cylinder diameter (52.4mm), piston diameter (52mm), mounting hole distance (49mm) and diameter (8mm), plus valve sizes (intake 23mm, exhaust 20mm) and piston pin length and diameter.
🏆 Our Verdict
The WOOSTAR Cylinder Head Assembly suits owners of 110cc Chinese ATVs, dirt bikes and go-karts who need a direct replacement that restores reliable starting and compression. Clear dimensional specifications and an included piston ring kit simplify repair and compatibility checks. While overall cost will vary, the comprehensive kit and consistent user reports of solid performance make it a practical long-term repair choice.
