All of our 125cc engine big bore kits are for 78mm tall cylinder engines only
Most China 125cc pitbike engines are 69mm tall cylinder type engines
Your engine MUST have a 78mm tall cylinder to use this kit.
Please see TECH LINK for more details
TB Roller Rocker Race Head V2 146cc Big Bore w/VM26 Carb Kit
China 124cc & 120cc engines 14mm Wrist Pin
Highest Performance Race head on the market with full parts support in stock.
Meets or Exceeds OEM Specifications.
Key Features:
- Roller rocker arms exactly like the V2 head for the KLX110
- 28.5mm intake valve
- 23.5mm exhaust valve
- 5mm valve stem
- 23mm exhaust port
- Matching high compression piston
- Head kits include all hardware
- 57mm piston with rings, pin, & clips
- 57mm all aluminum cylinder with steel liner
- VM26 Carb Kit
- High performance race camshaft (for the Race Head only)
- Head gasket kit
Recommended:
- Sta-bil fuel stabilizer - W-57-1109
See the Performance Info section for additional information on our performance parts.
Application:
- China 120cc engines with a 14mm wrist pin
Kit Includes:
- TBW0751 - V2 Race head
- TBW0821 - V2 Head bolt kit
- TBW0752 - Cam
- TBW0754 - V2 Head cover set
- TBW0414 - Cam sprocket
- TBW0824 - Piston
- TBW0862 - Top end gasket kit
- TBW0601 - Cylinder
- TBW0301 - Throttle cable
- TBW0433 - Intake kit
- TBW0399 - VM26 Carb
- TBW0413 - Air filter
