CP Piston & Ring Set for Acura B18A/B1 - Bore (81.5mm) - Size (+0.5mm) - Compression Ratio (9.0)

When you're rebuilding the engine in your 1990-2001 Acura Integra, especially if you're aiming for more power or need to replace worn components, a solid set of pistons is crucial. This set from CP Pistons includes four forged pistons and the necessary rings to match, designed specifically for the B18A and B18B engines found in those Integras. They come ready to install at an 81.5mm bore size, which is a +0.5mm oversize, perfect for engines that have been bored out during a rebuild. The 9.0:1 compression ratio is a good balance for many performance applications, offering a noticeable bump in power without being overly sensitive to fuel quality.

CP Pistons are well-known in the performance engine building world for their strong construction. These aren't cast pistons; they're forged from high-strength aluminum alloy. This forging process creates a much denser and more durable piston that can handle higher cylinder pressures and temperatures than cast pistons. This makes them a popular choice for builds that see more aggressive use, whether it's for track days, spirited street driving, or just a more robust daily driver. The included rings are designed to work seamlessly with these pistons, ensuring a good seal in the cylinder for optimal performance and longevity.

Because these are performance-oriented components, it's important to note that they are not CARB approved and cannot be shipped to California. If you're rebuilding the top end of your B18 engine, this piston and ring set offers a well-built foundation for a reliable and powerful build. Always refer to your engine builder's specifications and the manufacturer's installation instructions for proper assembly and break-in procedures.