4032FORD BIG BLOCK 4.390 BORE0.99 PININV.DOME/DISH1.520 CDPISTON SET/8

SRP Professional pistons are the most advanced lightweight FSR forging that offers superior strength. SRP pistons are up to 20% lighter than traditional equivalent pistons. High-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation. Accumulator grooves for improved ring seal. Designed for normally aspirated or moderate forced induction nitrous engine applications. SRP professional pistons come standard with high-performance skirt coating and low drag performance piston rings. Pin fitting and double spiro locks included. CNC machined ring grooves accept 1/16, 1/16, 3/16 rings (Sold separately). Includes wrist pin.