Trail Bikes 88cc Big Bore kit and 20mm Carburetor Kit:
- Lightweight aluminum cylinder w/ steel sleeve
- Cast in mounts on cylinder for aftermarket skid plates
- Oversized cooling fins on cylinder for efficient heat dissipation
- High compression 52mm piston with rings, pin, & clips
- Head gasket kit
- 20mm Performance carb assembly.
Trail Bikes 88cc Big Bore kit and 20mm Carburetor Kit:
- Lightweight aluminum cylinder with steel sleeve
- Cast in mounts on cylinder for aftermarket skid plates
- Oversized cooling fins on cylinder for efficient heat dissipation
- High compression 52mm piston with rings, pin, & clips
- Head gasket kit
- 20mm Performance carb assembly. Includes: 20mm carb, intake, heatstop, gaskets, mounting hardware/wrench, air filter and long throttle cable
- NEW! 12/08 - a main jet kit is now included too!
Easily double your power and fun with this quality, yet economical bore kit!!
We recommend purchasing a high volume oil pump kit (available in this section).
Installation Note: It will save a lot of time and effort if the oil pump is installed while installing the bore kit (requires cylinder removal).
Fits - CRF50, XR50
