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The JE Ultra Series forged piston set for GM Gen III/IV LS engines includes a 4.000 in bore, 4.000 in stroke dome configuration and an eight-cylinder kit for high-power applications. JE's Aligned Grain Flow forging increases tensile strength while thermal barrier crown and skirt coatings, lateral gas ports and optimized pin oiling protect components under boost. The kit includes Trend Performance wrist pins and is manufactured entirely in the USA.
JE Pistons Ultra Series GM Gen III/IV LS 4in Bore/4in Stroke Set of 8 Pistons
