CP Piston & Ring Set for Acura B18C1 - Bore (85mm) - Size (+1.0mm) - Compression Ratio (9.7)

If you're rebuilding the engine in your 1988-2000 Honda Civic, or perhaps a 1994-1997 Acura Integra, 1988-1991 Honda CRX, or 1993-1997 Honda Civic del Sol, this forged piston and ring set from CP Pistons is built for serious performance. This set is designed for an 85mm bore and is supplied at a +1.0mm oversize, meaning it's intended for engines that have already been bored out to accommodate wear or to increase displacement. The compression ratio comes in at 9.7:1, a solid figure that balances power with pump gas drivability for many performance applications.

CP Pistons are well-known in the performance engine building world for their robust construction. These aren't your typical cast pistons; they are forged from high-strength aluminum alloys. This forging process creates a denser, stronger grain structure that can better withstand the higher cylinder pressures and temperatures found in modified or performance-tuned engines. This strength is crucial for reliability when you're pushing your engine harder than stock. The included rings are also selected to work in harmony with the pistons, ensuring proper sealing for optimal compression and oil control.

When installing these pistons, remember they are an oversize part, so your engine block will need to be machined to the correct 85mm bore size. It's always recommended to consult with your engine builder or refer to CP Pistons' specific installation guidelines for the best results. This set is a popular choice for those looking to build a more powerful and durable engine for their performance Honda or Acura.