CP Piston & Ring Set for Honda H22A1 - Bore (87.5mm) - Size (+0.5mm) - Compression Ratio (9.0)

Forged from 2618 aluminum alloy, these CP Pistons are built for serious performance in your Honda H22A1 engine. The 87.5mm bore size, which is 0.5mm oversize from stock, is ideal for rebuilding or upgrading an engine where the cylinders have been bored out to match. This specific set is designed to achieve a 9.0:1 compression ratio, a solid choice for naturally aspirated builds or those running moderate boost levels where pump gas is the primary fuel. The material choice and forging process result in a piston that is both strong and lightweight, crucial for handling the increased stresses of a performance engine.

CP Pistons are well-known in the racing and performance community for their durability and precision. Each piston in this set is machined to tight tolerances, ensuring a proper fit and consistent performance across all cylinders. The included rings are designed to work seamlessly with the pistons, providing a good seal for optimal compression and oil control. This set is a significant upgrade over cast pistons, offering improved resistance to detonation and thermal expansion, which are common concerns in high-performance applications. If you're rebuilding the top end of your H22A1 and aiming for more power and reliability, this forged piston set is a strong foundation.

When installing these pistons, ensure your engine block has been properly machined to the 87.5mm bore size. It's also recommended to consult the manufacturer's installation guide for specific ring gap recommendations and lubrication procedures. Please note that this part is not CARB approved and cannot be shipped to California. For any questions regarding fitment or installation, please refer to the manufacturer's documentation or contact our support team.