CP Piston & Ring Set for Honda K20A/A2 - Bore 89.0mm - Size (+3.0mm) - Compression Ratio 11.5

CP Pistons is well-known for making strong internal engine components, and this forged piston and ring set is a prime example of their work for the Honda K20A and K20A2 engines. If you're rebuilding the top end of your 2002-2004 Acura RSX, these pistons are built to handle the demands of a performance build. They feature an 89.0mm bore and are designed for an 11.5:1 compression ratio, which is a notable bump over stock, offering improved power potential when paired with appropriate tuning and supporting modifications.

These pistons are forged from high-strength aluminum, a material chosen for its durability and ability to withstand high temperatures and pressures common in performance applications. The set includes the necessary rings, ensuring you have the critical components for proper sealing and oil control. The 89.0mm bore size is a +3.0mm over standard, indicating these are intended for engines that have already been bored out to accommodate larger pistons, often part of a performance engine build where increased displacement is desired. This size is specific and requires the engine block to be machined to match.

When undertaking an engine rebuild of this nature, it's important to have the block professionally machined to the exact specifications of these pistons. Proper installation and balancing are crucial for the longevity and performance of your engine. This set is designed as a direct fit for the specified Acura RSX models, but remember that due to their performance nature and increased compression, they are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation guide for detailed procedures and specifications.