CP Piston & Ring Set for Acura/Honda K20A/A2/A3 - Bore (87.5mm) - Size (+1.5mm) - Compression Ratio

This is a set of forged pistons and rings from CP Pistons, specifically made for the 2002-2006 Acura RSX with K20A, K20A2, or K20A3 engines. If you're rebuilding the top end of your K-series engine and looking for a robust upgrade, these pistons are a solid choice. They come in at an 87.5mm bore size, which is 1.5mm larger than the stock bore, meaning they're designed for engines that have already been bored out to accommodate this size. This is a common step when rebuilding for higher performance or to refresh an engine with significant wear.

CP Pistons are well-known in the performance engine building community for their strong construction. These pistons are forged from high-strength aluminum alloy, which makes them significantly more durable and resistant to the higher pressures and temperatures found in modified engines compared to cast pistons. The set includes the necessary rings, which are also selected to work with the piston design and bore size for a proper seal. The compression ratio will be determined by the piston's dish volume and the cylinder head's combustion chamber volume, so keep that in mind when planning your build.

When installing these pistons, ensure your engine block has been professionally machined to the correct 87.5mm bore size and that the cylinder walls are smooth and clean. Proper ring gap setting and piston orientation are critical for performance and longevity. This set is not CARB approved and cannot be shipped to California.