CP Piston & Ring Set for Honda K24 w/K20A/A2 - Bore 88.0mm - Size (+1.0mm) - Compression Ratio 11.5

If you're rebuilding the engine in your 2002-2004 Acura RSX, especially if you're aiming for more power or need to replace worn components, a set of high-performance pistons like these from CP Pistons is a solid choice. These pistons are designed for the K24 engine when paired with K20A/A2 cylinder heads, featuring an 88.0mm bore and an oversize of +1.0mm, meaning they're intended for engines that have been bored out to this specific dimension. The 11.5:1 compression ratio is a notable bump over stock, which can significantly increase power output when combined with proper tuning and supporting modifications.

CP Pistons are well-known in the performance world for their robust construction. These are forged pistons, which means they start as a solid block of aluminum that's heated and hammered into shape under immense pressure. This process creates a much stronger and more durable grain structure than cast pistons, making them far more resistant to the extreme pressures and temperatures found in a high-performance engine. The +1.0mm oversize is crucial; it indicates these are meant for an engine block that has already been machined to 88.0mm, often done to clean up cylinder walls or increase displacement. This set includes the rings needed for installation, simplifying your parts list.

When installing these pistons, ensure your engine block has been professionally machined to the exact 88.0mm bore size. Proper ring gap setting and careful installation are key to achieving the intended performance and longevity. Remember that this piston set is not CARB approved and cannot be shipped to California. Always consult your engine builder or a trusted mechanic for specific installation procedures and tuning recommendations to get the most out of this performance component.