CP Piston & Ring for Honda K20A/A2 - Bore 87.0mm - Size (+1.0mm) - Compression Ratio 11.5

This kit includes a set of four forged pistons and matching piston rings, specifically made for the Honda K20A and K20A2 engines found in the 2002-2004 Acura RSX. These pistons are designed to increase the bore size to 87.0mm, with a +1.0mm overbore, and achieve an 11.5:1 compression ratio. This is a significant upgrade for anyone looking to rebuild or enhance their engine's performance.

CP Pistons are well-known for their robust construction, and these are no exception. Forged from high-strength aluminum alloy, these pistons are built to withstand the higher pressures and temperatures associated with performance engine builds. The included rings are designed to seal effectively against the cylinder walls, ensuring good compression and oil control. The 11.5:1 compression ratio is a popular choice for naturally aspirated builds aiming for improved power output without the need for forced induction, though it can also be used in some boosted applications with proper tuning.

When installing these pistons, remember they are a +1.0mm overbore, meaning your engine block will need to be bored and honed to this specific size by a machine shop. This ensures a proper fit and seal for optimal engine performance and longevity. It's always recommended to consult the manufacturer's installation instructions and work with a qualified mechanic for this type of engine work.