BBC 502 Domed Piston Set 4.500 Bore +1cc

The BBC 502 Domed Piston Set 4.500 Bore +1cc from Sportsman Racing Products is a precision forged replacement piston set engineered for high-performance big-block Chevy marine and automotive applications. This complete eight-piston set delivers the compression boost and durability demanded by serious engine builders and performance boaters pushing their 502 cubic-inch engines to the limit.

Each piston features a domed crown geometry with +1.00 cc displacement advantage, designed to increase compression ratio and unlock additional horsepower without requiring costly engine block modifications. The 4.500-inch bore specification matches factory big-block Chevy dimensions, while the precisely machined ring grooves (1/16 x 1/16 x 3/16 inch) accommodate modern ring packages and ensure consistent sealing across all eight cylinders. Forged construction provides the thermal strength and fatigue resistance necessary for sustained high-RPM operation and variable-load marine duty.

This piston set targets engine builders, marine mechanics, and performance enthusiasts rebuilding or upgrading 502 big-block Chevy engines for offshore fishing boats, high-performance cruisers, and competition vehicles. Whether restoring a worn-out powerplant to factory specification or optimizing compression for a custom build, the BBC 502 Domed Piston Set delivers the OEM compatibility and precision fit that eliminates guesswork during assembly. The complete eight-piston configuration ensures balanced performance across all cylinders and reduces installation time compared to sourcing individual components.

Sportsman Racing Products pistons are recognized throughout the performance rebuilding community for maintaining tight tolerances and consistent weight distribution, critical factors in minimizing vibration and extending engine life. This 502 set represents a complete, ready-to-install solution for anyone committed to a thorough, professional-grade engine rebuild.