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The JE Ultra Series forged piston set for GM Gen III/IV LS engines uses a 4.000 in bore and 3.622 in stroke in an eight-cylinder kit intended for boost-heavy builds. JE's Aligned Grain Flow forging raises tensile strength for extreme cylinder pressures, complemented by thermal barrier crown coating, skirt coating, lateral gas ports and optimized pin oiling to reduce heat and wear. Includes high-strength Trend wrist pins and is made in the USA.
JE Pistons Ultra Series GM Gen III/IV LS 4in Bore/3.622in Stroke Set of 8 Pistons
