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JE Pistons Ultra Series forged piston kit for GM Gen III/IV LS (4.065in bore, 4.00in stroke) is designed for high-output V8 applications where strength matters. Ultra Series pistons use JE's Aligned Grain Flow forging and include thermal barrier crown coating, skirt coating, lateral gas ports and enhanced pin oiling to reduce friction and maintain ring seal under boost. Premium wrist pins and US manufacture round out the offering.
JE Pistons Ultra Series GM Gen III/IV LS 4.065in Bore/4in Stroke Set of 8 Pistons
