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JE Pistons Ultra Series forged piston kit for GM Gen III/IV LS (4.065in bore, 3.622in stroke) supplies an eight‑cylinder solution for boosted or high-output LS builds. JE's Aligned Grain Flow forging increases tensile strength and the pistons include thermal barrier crown coating, skirt coating, lateral gas ports and optimized pin oiling to protect ring seal and lower friction. Trend Performance wrist pins and US manufacture finish the kit.
JE Pistons Ultra Series GM Gen III/IV LS 4.065in Bore/3.622in Stroke Set of 8 Pistons
