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JE Pistons Ultra Series forged pistons for the Subaru EJ257 (100.00 mm bore) are built for high-boost, power-adder engines. Ultra Series forgings use JE’s Aligned Grain Flow technology for elevated tensile strength and include thermal barrier crown coating, skirt coating, lateral gas ports, optimized pin oiling and high-strength wrist pins. These feature-rich pistons are made 100% in the USA and intended for demanding performance builds.
JE Pistons Subaru EJ257 Ultra Series 8.5:1 C/R 100mm Bore 83mm Stroke Piston Kit (Set of 4)
