JE Pistons LS1 series pistons utilize dedicated Forged Side Relief (FSR) forgings specifically designed for the demands of LS series engines. They are lightweight, extremely durable, and machined for modern 1.5mm, 1.5mm, 3.0mm performance ring sets.
JE, Chevrolet, LS Gen III/IV, 3.905 in. Bore, 1.340 CD, Inverted Dome/Dish, 8 Cyl. Piston Kit
Chevrolet LS1