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The JE Ultra Series forged piston set for GM Gen III/IV LS engines features a 4.125 in bore and 4.000 in stroke in an eight-cylinder kit engineered for high-boost applications. JE's Aligned Grain Flow forging boosts tensile strength; thermal barrier crown coating, skirt coating, lateral gas ports and optimized pin oiling reduce temperatures and friction. The kit includes Trend Performance wrist pins and is manufactured entirely in the USA.
JE Pistons Ultra Series GM Gen III/IV LS 4.125in Bore/4in Stroke Set of 8 Pistons
