4032FORD PINTO 3.820 BORE0.927 PINFLATTOP1.090 CDPISTON SET/4

Recommended ring set J640F4-3820. SRP Professional pistons are the most advanced lightweight FSR forging that offers superior strength. They are up to 20% lighter than traditional equivalent pistons. Made from high-silicon 4032 aluminum alloy for reduced piston-to-wall clearance and quiet operation. Features 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. Ideal for oval track to street/strip applications. Pin fitting and double spiro locks included. Forced pin oiler for increased wrist pin lubrication. CNC machined ring grooves accept 1.5, 1.5, 4mm rings (Sold separately). Includes .912 x 2.750 x .140 straight wall wrist pin (123 grams) and .927 x 2.750 x .130 straight wall wrist pin (130 grams).