SBC Dished Piston Set 4.155 Bore -25.5cc

The Race Tec Pistons SBC Dished Piston Set 4.155 Bore -25.5cc is a premium forged piston solution designed specifically for small-block Chevy high-performance engines. This eight-piece set is engineered to meet the demands of builders looking for precise compression ratios and reliable ring sealing in various performance applications.

Featuring a dished crown design, this piston set effectively manages combustion chamber volume, making it ideal for forced-induction applications. The -25.5cc dish cavity allows for fine-tuning of effective compression ratios, particularly beneficial in turbocharged or nitrous oxide setups. The 4.155-inch bore and 1.5 x 1.5 x 3.0 mm ring groove geometry ensure proper ring seating and blowby control.

Engine builders and enthusiasts will find this piston set valuable for developing street performance builds and supercharged platforms. The forged construction provides the durability required for sustained high-RPM operation, while the precise bore diameter maintains tight piston-to-wall clearance, minimizing friction and skirt wear.