CP Piston & Ring Set for Acura NSX C30A - Bore (90.5mm) - Size (+0.5mm) - CR (10.2) - Set of 6

This is a set of six forged pistons and rings from CP Pistons, specifically made for the Acura NSX C30A engine. These pistons are a +0.5mm oversize, meaning they are 0.5mm larger in diameter than the stock pistons, intended for engines that have been bored out to match this size during a rebuild. They feature a 90.5mm bore diameter and a 10.2:1 compression ratio, designed to work with the C30A engine's cylinder head and crankshaft specifications.

CP Pistons are well-known for their robust construction and are a popular choice for performance engine builds. These pistons are forged from high-strength aluminum alloy, which offers excellent durability and resistance to the extreme pressures and temperatures found in high-performance engines. The forged process creates a denser, stronger grain structure compared to cast pistons, making them ideal for applications where reliability and longevity are paramount. This set includes the necessary rings, which are critical for proper sealing between the piston and cylinder wall, ensuring optimal compression and oil control.

When rebuilding a C30A engine, especially if it requires a bore restoration or an increase in displacement, using a matched set of pistons and rings like this one from CP Pistons ensures consistent performance across all cylinders. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's detailed installation instructions for proper fitment and assembly procedures.