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JE Pistons Ultra Series forged piston kit for GM Gen III/IV LS (4.07in bore, 3.622in stroke) is engineered for V8 power-adder engines. The Ultra Series combines JE's Aligned Grain Flow forging with thermal barrier crown coating, skirt coating and lateral gas ports to manage heat and preserve ring seal under boost. Optimized pin oiling and premium wrist pins are included, and the pistons are made in the USA for quality assurance.
JE Pistons Ultra Series GM Gen III/IV LS 4.07in Bore/3.622in Stroke Set of 8 Pistons
