CP Piston & Ring Set for Honda H22 - Bore (87.5mm) - Size (+0.5mm) - Compression Ratio (11.5)

In this set, you get four forged pistons and their corresponding ring sets, ready to be installed in your Honda H22 engine. These aren't your typical cast pistons; they're forged from high-strength aluminum alloy, which makes them significantly more durable and able to handle the higher stresses of performance applications. The 87.5mm bore size is a +0.5mm overbore from stock, often used when rebuilding an engine to refresh cylinder walls or to achieve a specific displacement. With a compression ratio of 11.5:1, these pistons are designed to increase the engine's power output by compressing the air-fuel mixture more tightly before ignition.

CP Pistons is known for making well-built engine components, and this set is no exception. The forged construction means they resist deformation under extreme heat and pressure, which is crucial for engines that see hard use, like those in racing or heavily modified street cars. The included ring sets are specifically matched to these pistons, ensuring a proper seal between the piston and cylinder wall. This seal is vital for maintaining compression, controlling oil consumption, and achieving optimal performance. Installing these pistons is typically part of a larger engine rebuild, often requiring professional machining and careful assembly to ensure everything is balanced and runs smoothly.

When rebuilding your Honda H22 with these pistons, remember that the 11.5:1 compression ratio is higher than stock. This means you'll need to pay close attention to fuel quality and tuning to prevent detonation, especially if you're using forced induction. Always refer to the manufacturer's installation instructions for precise details on assembly and break-in procedures.