CP Piston & Ring for Acura B18C1 - Bore (81.5mm) - Size (+0.5mm) - Compression Ratio (11.0) **ONE**

This product includes one CP Pistons piston and ring set for the Acura B18C1 engine. It features a bore size of 81.5mm and is sized at +0.5mm, meaning it's intended for engines that have been bored out slightly from their original specification. The compression ratio is set at 11.0:1, which is a common target for naturally aspirated performance builds looking for improved power without going too extreme.

CP Pistons are well-known in the performance engine building world. These pistons are forged, which means they start as a solid block of aluminum that's heated and hammered into shape. This process creates a much stronger and more durable piston than cast ones, making them a solid choice for engines that will see higher RPMs or more aggressive use. The 11.0:1 compression ratio is a good balance for streetable performance, offering a noticeable bump in power over stock while still being able to run on pump gas in many setups, though proper tuning is always recommended.

This set is not CARB approved and cannot be shipped to California. Always consult your engine builder or tuner to ensure this piston set is the right choice for your specific build and intended use.