CP Piston & Ring Set for Honda B-Series - Bore (84.5mm) - Size (+0.5mm) - Compression Ratio (11.5)

If you're rebuilding the engine in your 1988-2000 Honda Civic or a compatible Acura Integra, CRX, or Civic del Sol, and you're aiming for improved performance, a set of forged pistons like these from CP Pistons is a solid choice. These pistons are designed to handle higher cylinder pressures and temperatures than stock cast pistons, making them ideal for modified engines or those looking for increased durability under demanding conditions. This particular set features an 84.5mm bore, which is a +0.5mm overbore from the standard size, and a compression ratio of 11.5:1, suitable for naturally aspirated or boosted applications where a balance of power and pump gas compatibility is desired.

CP Pistons are well-known for their forged construction, typically using aerospace-grade aluminum alloys that offer a strong yet lightweight piston. This strength is crucial for resisting detonation and the stresses of increased combustion events. The included rings are matched to the piston design to ensure proper sealing between the piston and cylinder wall, which is vital for maintaining compression and controlling oil consumption. Because these are an overbore piston, proper cylinder wall preparation and honing are critical during installation to ensure a good seal and long engine life. Always refer to the manufacturer's detailed installation instructions for precise clearances and procedures.

This set includes the pistons and the necessary rings to complete the installation. It's important to note that these pistons are not CARB approved and cannot be shipped to California. For a complete engine build, consider pairing these pistons with appropriate connecting rods, bearings, and a quality gasket set to ensure all components work together seamlessly.