88cc Big Bore kit, 20mm Carburetor kit, and Race Cam Performance 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
- High performance race camshaft for stock head 
- 20mm Performance carb assembly. Includes: 20mm carb, intake, heatstop, gaskets, mounting hardware/wrench, angled dual foam 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).

See the Performance Info section for additional information on our performance parts.