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The JE Ultra Series forged piston set for GM Gen III/IV LS engines uses a 4.130 in bore and 3.622 in stroke in an eight-cylinder kit designed for demanding, boosted builds. Ultra Series combines JE's Aligned Grain Flow forging with thermal barrier crown and skirt coatings, lateral gas ports and enhanced pin oiling to reduce crown temperatures and friction while maintaining ring seal. Comes with high-strength Trend wrist pins and US manufacturing.
JE Pistons Ultra Series GM Gen III/IV LS 4.13in Bore/3.622in Stroke Set of 8 Pistons
