SRP forged pistons are born from the rich racing experience of JE Pistons, the Sportsman Racing Products (SRP) piston line proudly bridges the gap between high-quality forged piston performance and affordability. Forged from strong, 4032 aluminum alloy material, SRP pistons are designed and manufactured to reduce machining costs without sacrificing strength or performance characteristics. SRP Pistons are the perfect option for someone building a mild to moderate performance engine on a sportsman budget. SRP pistons are made 100% in the USA. Available for Chevrolet Big Block Engines Pistons include