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The JE Ultra Series 8‑cylinder forged piston kit for GM Gen III/IV LS with a 4.130 in bore and 3.622 in stroke supports high-displacement LS projects that require strong pistons. Aligned Grain Flow forging elevates tensile strength for power-adder use. Thermal barrier crown and skirt coatings help control temperatures and friction; lateral gas ports and enhanced pin oiling maintain ring seal and lubrication, with Trend Performance thick-wall wrist pins for added durability. Made in the USA.
JE Pistons Ultra Series GM Gen III/IV LS 4.13in Bore/3.622in Stroke Set of 8 Pistons
