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JE Pistons Ultra Series forged piston kit for Subaru EJ257 (100mm bore, 9.5:1 compression) offers a resilient option for high-boost EJ engine builds. Ultra Series pistons employ JE's proprietary Aligned Grain Flow forging and include thermal barrier crown coating, skirt coating, lateral gas ports and optimized pin oiling to protect ring seal and reduce wear. High-strength wrist pins and full US production complete the kit.
JE Pistons Ultra Series Subaru EJ257 100mm Bore 9.5:1 CR Set of 4 Pistons
