Big bore kit for the CRF230F. This is the quickest way to add power to your bike. Great when combined with our exhaust system, Rev-Box, and Free-Flow airfilter. Your OEM cylinder will need to be machined for installation.
67mm piston, pin, clips, and rings
High compression piston
Includes head and base gaskets
If you want the kit to include BBR MX cam and heavy duty valve springs look at 240 Big Bore w/ Cam # 411-HCF-2301