JE Ultra Series forged pistons for Subaru EJ25 applications, offered with a 99.5mm bore and 9.5:1 compression in an inverted dome configuration. Ultra Series pistons use JE’s Aligned Grain Flow forging for high tensile strength and include features such as thermal barrier crown coating, skirt coating and optimized pin oiling. Made in the USA and built for high-demand, power-adder engine builds.
JE Pistons Subaru EJ25 Ultra Series 99.5mm Bore Dome -7cc 9.5:1 CR - Piston Set