JE Pistons Ultra Series GM Gen III/IV LS 4.01in Bore/4in Stroke Set of 8 Pistons turn14-in-stock Maintains clamping pressure under high

Maintains clamping pressure under high boost conditions

When we flow tested a conventional air filter design against the Skunk2 filter and used advanced CFD analysis program

The valve seat is manufactured with precision CNC machining technology

and gaskets

which makes having the proper air/fuel mixture in the combustion chamber paramount for best performance

JE Pistons Ultra Series GM Gen III/IV LS 4.01in Bore/4in Stroke Set of 8 Pistons turn14-in-stock Maintains clamping pressure under highManufacturer Part # : 361730 Market Description Ultra Series forged pistons from JE are the industry? s strongest, most fully featured pistons available off the shelf. Offered for a wide range of domestic applications from LS to Big Block and HEMI to Ford Modular, Ultra Series pistons feature JE? s proprietary Aligned Grain Flow forging technology providing next level tensile strength ideal for the extreme cylinder pressures of power adder engine