CP Piston BRS SBC 4.155 Bore 6.00 Rod 1.00 Ch -21CC 10.8 Cr Set Of 8 (MTO Non-Cancel)

These CP Pistons are forged from 2618 aluminum, a strong material commonly used in high-performance racing applications. The 4.155-inch bore size is a notable step up from stock, designed for builders looking to increase displacement in their Small Block Chevy (SBC) engine. The 6.00-inch rod length is also a common choice for performance builds, working well with many popular crankshafts to achieve a good stroke-to-rod ratio for efficient power delivery.

Each piston features a -21cc dish volume, which, when paired with a 10.8:1 compression ratio target, helps achieve a specific combustion chamber volume. This precise volume is critical for tuning engine performance and reliability. The pistons are designed with a 1.00-inch compression height, meaning the distance from the wrist pin center to the top of the piston crown. This measurement is important for ensuring the piston sits correctly in the cylinder bore relative to the deck height of the engine block.

This set includes eight pistons, along with the necessary wrist pins and locks, ready for installation. They are a made-to-order item and cannot be canceled once ordered. Please note that these pistons are not CARB approved and cannot be shipped to California. Always consult your engine builder or a qualified professional for specific installation requirements and compatibility with your engine build.