CP Pistons Forged Piston SINGLE - 99.5mm Bore 8.2 CRCP Carrillo pistons are compatible with oversized valves and high lift camshafts. Part numbers ending in a "X" are on a X style forging for additional strength, durability and weight reduction often geared for high compression naturally aspirated engines. The X style has a full radius dome design, high performance rings and light weight wrist pins. CP Carrillo Pistons represent the highest quality and are engineered for maximum power. Pistons can be