CP Piston & Ring Set for Acura/Honda K20A/A2/A3 - Bore (86.5mm) - Size (+0.5mm) - 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. These pistons are designed to replace your stock ones when rebuilding or modifying your engine, and they come at a +0.5mm oversize, meaning they are 0.5mm larger in diameter than the factory pistons, measuring 86.5mm. This is a common size when an engine needs to be bored out to clean up cylinder walls or to increase displacement slightly.

CP Pistons are well-known for their strong construction, and these are forged from high-grade aluminum. Forging makes the pistons significantly stronger and more durable than cast pistons, which is crucial for engines that see higher performance demands or are being built for boosted applications. The set includes the pistons and the necessary rings, all matched for a proper seal and optimal performance. The compression ratio will depend on the cylinder head and gasket combination used, but these are designed to work with a variety of setups for the K-series engine.

When installing these, remember they are an oversize part, so your engine block will need to be machined to the specified 86.5mm bore size. It's always recommended to consult with your machine shop and follow CP Pistons' installation guidelines closely to ensure a proper fit and long-lasting performance. This set is a solid choice for anyone looking to rebuild their K-series engine with reliable, high-performance components.