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The JE Ultra Series forged piston set for GM Gen III/IV LS engines comes with a 4.125 in bore and 4.000 in stroke in an eight-cylinder kit designed for power-adder applications. Ultra Series combines JE's Aligned Grain Flow forging with thermal barrier crown and skirt coatings, lateral gas ports and enhanced pin oiling to protect ring seal and reduce wear. High-strength Trend wrist pins and US manufacturing back the build.
JE Pistons Ultra Series GM Gen III/IV LS 4.125in Bore/4in Stroke Set of 8 Pistons
