CP Piston BRS SBC -20.5CC 4.125 Bore 3.750 Stroke 5.700 Rod Set Of 8 (MTO Non-Cancel)

CP Pistons is well-known for making strong, reliable internal engine components for high-performance applications. This set of forged pistons is built for Small Block Chevy (SBC) engines and is designed for builders who need a solid foundation for their build. These pistons feature a -20.5cc dish, a 4.125-inch bore, a 3.750-inch stroke, and are designed to work with a 5.700-inch rod. This combination is a popular choice for many performance SBC builds, offering a good balance of compression and displacement.

Forged pistons like these are a significant upgrade over cast pistons. The forging process aligns the metal's grain structure, making them much stronger and more resistant to detonation and high cylinder pressures. This means they can handle the demands of aggressive camshafts, forced induction, or high-octane naturally aspirated builds. The -20.5cc dish volume is a key specification that helps determine your final compression ratio when paired with your cylinder heads and gasket thickness. It's important to calculate this carefully to achieve your target compression for the type of fuel you plan to run.

This is a made-to-order set, meaning CP Pistons will build them specifically for your order. This ensures you get exactly what you need, but it also means these pistons cannot be canceled once the order is placed. Because these are custom-built for performance, they are not CARB approved and cannot be shipped to California. Always consult your engine builder or a trusted performance shop to ensure these pistons meet the specific requirements of your engine build.