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JE Pistons Ultra Series forged piston set for Subaru EJ25 (100mm bore) is built for high‑boost, high‑stress builds using JE's Aligned Grain Flow forging to maximize tensile strength. These pistons include a thermal‑barrier crown coating, skirt coating, enhanced pin oiling and lateral gas ports to preserve ring seal at high RPM and boost. High‑strength wrist pins and other race‑level features support extreme cylinder pressures; made 100% in the USA.
JE Pistons Subaru EJ25 Ultra Series 100mm Bore Dia -17.3cc 8.5:1 0.905in Pin - Piston Set
