JE Pistons Ultra Series pistons combine all of the best, most desirable piston features, such as thermal barrier crown coating, lateral gas ports, thick-wall wrist pins, and a revolutionary new forging technology for the ultimate in strength. They are ready for massive power and boost right out of the box! JE Ultra, Chevrolet, LS Gen III/IV, 4.125 in. Bore, 1.304 CD, Inverted Dome/Dish, 8 Cyl. Piston Kit Chevrolet LS Gen III/IV
