YFZ 450 2003-2009 95mm 13.25:1 Compression
CP Piston M piston kits are available for your powersports applications. These kits include the piston, pin, locks, and rings. CP Pistons use X-forgings to minimize friction and weight without compromising strength. Double pin oilers add twice the amount of oil from the cylinder wall to the wrist pin. Radiused domes are used to maximize quench, while eliminating possible hot spots that promote detonation. CP Piston M piston kits have a V-shaped groove machined into the second ring to collect excess blowby between the top and second rings. This groove is known as the accumulator groove.