BBC Domed Piston Set 4.280 Bore +17cc

SRP Professional pistons are advanced lightweight FSR forgings that offer 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. The CNC machined domes with radiused valve reliefs provide optimum flame travel. Pin fitting and double spiro locks (#990-042-CS) are included, along with 990-2930-15-51S wrist pins (150 grams).