CP Carrillo 4B11 Evo X 9.0:1 86.5mm Bore Pistons (SC7221) ARP 8 is splash and dust

8 is splash and dust proof

Requires OEM cam position sensor (23731W000P/MD327107)

Turbo failures resulting from plugged filters are the responsibility of the user

mild steel or stainless steel

The longevity of your engine depends on keeping your engine running cool

CP Carrillo 4B11 Evo X 9.0:1 86.5mm Bore Pistons (SC7221) ARP 8 is splash and dustThe CP Carrillo Piston Set for the Evo X include 4 pistons, rings, wrist pins and pin clips with a 86. 5mm bore size and 9. 0: 1 compression ratio. Vehicle Fitment: 2008 2015 Mitsubishi Lancer Evolution X More Info: "CP Groove" stands for Constant Pressure Groove. This groove works as a channel on the lower part of the top land that equalizes pressure to the back of the top ring groove. When used in combination with lateral gas ports, the CP groove