BBC Flat Top Piston Set 4.280 Bore -3cc

Piston - Flat Top - Forged - 4.280 in Bore - 1/16 x 1/16 x 3/16 in Ring Grooves - Minus 3.00 cc - Big Block Chevy - Set of 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. Ring land and crown thickness specifically engineered for mild turbo, supercharged, and nitrous applications. Forced pin oiler for increased wrist pin lubrication. CNC machined domes with radiused valve reliefs provide optimum flame travel. Pin fitting and double spiro locks (#990-042-CS) included. 990-2930-15-51S wrist pins (150 grams) included. CNC Machined ring grooves accept 1/16, 1/16, 3/16mm rings (Rings Sold Separately). Pin upgrade available.