JE Ultra Series forged pistons for the Mitsubishi 4G63 (Evo VII–IX) come as a set of four 86mm bore pistons with 10.0:1 compression and 22mm pins, intended for high-boost builds. Ultra Series features JE’s Aligned Grain Flow forging, thermal barrier crown and skirt coatings, lateral gas ports, optimized pin oiling and thick-wall wrist pins, and are manufactured in the USA.
JE Pistons Ultra Series Mitsubishi EVO 7-9 4G63 86mm Bore 10.0:1 CR Set of 4 Pistons