CP Piston & Ring Set for Honda B-Series - Bore (84.5mm) - Size (+0.5mm) - Compression Ratio (12.5)

This kit includes four forged pistons and a complete set of piston rings, ready to be installed in your Honda B-Series engine. These pistons are specifically sized for an 84.5mm bore, which is a +0.5mm overbore from the factory specification. With a 12.5:1 compression ratio, they are designed to work with performance cylinder heads and camshafts to increase power output.

CP Pistons are well-known in the performance engine building world. These pistons are forged from high-strength aluminum alloy, which makes them incredibly durable and able to withstand the higher cylinder pressures and temperatures associated with a performance build. The 12.5:1 compression ratio is a notable bump over stock, meaning you'll see improved throttle response and overall power gains when paired with appropriate tuning and supporting modifications. The included rings are designed to seal well against the cylinder wall, ensuring good compression and efficient oil control.

This set is a solid option for anyone rebuilding or modifying a B-Series engine for performance applications. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Proper engine assembly procedures, including torque specifications and ring gap settings, should be followed according to the manufacturer's instructions for optimal performance and longevity.