CP Piston 05-13 Yamaha YZ250F 79mm Bore +2mm Oversize CR 12.5:1 w/Pin/Locks/Rings (Single Piston)

This is a CP Pistons forged piston kit designed for 2005 through 2013 Yamaha YZ250F models. It's a single piston replacement that's 79mm in bore size and comes at a +2mm oversize, meaning it's intended for engines that have already been bored out by 2mm from their original specification. The compression ratio is a healthy 12.5:1, which is an improvement over stock and will give your engine a bit more power and responsiveness.

CP Pistons are well-known for their strong construction, and this forged piston is no exception. Forging the aluminum makes it significantly stronger and more durable than cast pistons, allowing it to handle the increased pressures and heat of a higher compression ratio. This kit comes complete with the piston, wrist pin, pin locks, and a full set of rings, so you have everything you need to get the piston installed. It's a solid option if you're rebuilding the top end of your YZ250F and want a reliable, performance-oriented replacement.

Please note that this piston kit is not CARB approved and cannot be shipped to California. Always refer to your service manual for proper installation procedures and torque specifications.