Seller notes

***** Fits 1981-2018 XR100/CRF100 ***** NEW! 120cc Big Bore Performance Kit (58mm): - Aluminum cylinder with steel sleeve - High compression 58mm piston with rings, pin, & clips - Head gasket kit Affordable and will make your XR100 or CRF100 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 this kit. If you don't have any experience ...

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