Wiseco Mitsu 4G64 w/4G63 Heads 10.5:1 E85 Piston Shelf Stock Kit

Wiseco K656M85 pistons are high-performance, forged pistons designed for Mitsubishi 4G63 and 4G64 engines, suitable for E85 fuel. Engineered and machined in the U.S., these pistons feature 2618 aerospace alloy for superior strength, strutted forging, and an ArmorGlide® skirt coating for reduced friction and quieter operation. They include valve pocket designs that accommodate oversized valves and high-lift cams, and crown shapes that promote maximum intake charge efficiency to resist detonation and pre-ignition, extending engine life and increasing horsepower potential. Most Wiseco pistons have offset pins for quiet operation, similar to OEM.