120cc Big Bore Kit - 58mm - Honda CRF100F XR100R 711 Needle clip center

Needle clip center

High Volume oil pump is recommended (sold seperately)

52mm Bore Kit

This new version is better suited for pavement racing or backyard pitbike fun and you don’t need to switch to a longer front suspension (your OEM front end is fine with this swingarm)

120cc Big Bore Kit - 58mm - Honda CRF100F XR100R 711 Needle clip centerTB Parts 120cc (58mm) Big Bore Kit Fits All Years of the Honda CRF100F & XR100R TBW9087 Aluminum cylinder with steel sleeve High compression 58mm piston with rings, pin, & clips Head gasket kit Affordable and will make your XR100 or CRF100F a lot more fun to ride by adding some needed power. This kit does not require boring of the case simply bolt on and go!! There are no installation instructions, but if you can replace your piston, you can install