SRP pistons, manufactured by JE, are "making performance affordable". SRP specific designed forgings eliminate several phases of the manufacturing process, saving time and cutting costs with high volume production. All pistons are machined to accept 1/16" top, 1/16" second and 3/16" oil rings. Sold in sets of eight, with wrist pins and double Spiro Locks.Pit Stop USA offers SRP Performance Forged Dished Piston Set - SB Chevy - 4.030" Bore, 3.750" Stroke, 6.000" Rod 138103 at low everyday prices. Be sure to check out all of our products from SRP - Sportsman Racing Products including Sportsman Racing Products Forged Pistons - Small Block Chevy and SRP Forged Pistons - Small Block Chevy.