SRP Pistons 156505 Forged 23° Late Model Flat Top 4.030 Bore

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 2618 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.

FlyWeight, competition two-barrel piston for optimum "Off the corner" acceleration.

Piston designed for two-barrel applications up to 400 horsepower.

Forced Pin Oiling for increased wrist pin lubrication

Pin fitting, round wire locks included

927-2500-150 wall wrist pin (118 grams) included

CNC Machined ring grooves accept 1/16, 1/16, 3/16mm rings (Sold Separately)

Compression Ratio:

58cc 11.1:1

64cc 10.3:1

70cc 9.6:1