Brian Crower BMW B58 / S58 Pistons w/ pins, rings & locks 87mm Bore 8.6:1 CR

Brian Crower forged pistons for BMW B58 and S58 engines. These pistons are designed for builds where increased performance and durability are key. With an 87mm bore and a compression ratio of 8.6:1, they are a solid choice for those looking to modify their engine for more power or to replace worn components with a stronger option.

Crafted from high-strength aluminum, these pistons are built to withstand the higher cylinder pressures and temperatures often found in performance applications. The included wrist pins, piston rings, and locks ensure you have all the necessary components for a complete installation. The 8.6:1 compression ratio is a notable change from stock, offering a good balance for forced induction setups, allowing for more boost while maintaining reasonable drivability and reliability. This specific bore size is critical for engine rebuilding, ensuring a proper fit within the cylinder walls.

When undertaking an engine build or rebuild for your BMW B58 or S58, using well-built internal components like these Brian Crower pistons is essential. They are designed to be a direct replacement for the factory pistons, simplifying the installation process. Always refer to the manufacturer's installation instructions for specific details regarding assembly and break-in procedures.