CP Piston & Ring Set for Nissan SR20VE/VET - Bore (86.5mm) - Size (+0.5mm) - CR (12.5) - Set of 4

This is a set of four forged pistons and rings from CP Pistons, specifically made for Nissan SR20VE and SR20VET engines. These pistons are designed to be 86.5mm in bore size and are 0.5mm oversize, meaning they are intended for engines that have already been bored out to accommodate this larger size. With a compression ratio of 12.5:1, they're built for performance builds where increased power is the goal.

CP Pistons are well-known in the performance engine building world. These aren't your average cast pistons; they're forged from high-strength aluminum alloys. This forging process aligns the grain structure of the metal, making them significantly stronger and more durable than cast pistons. This is crucial for high-performance applications where cylinder pressures and temperatures are much higher. The 12.5:1 compression ratio is a notable bump over stock, which will increase horsepower and torque, especially when paired with appropriate tuning and supporting modifications. The included rings are designed to seal effectively with these pistons, ensuring good compression and oil control.

When installing these pistons, remember they are 0.5mm oversize. This means the cylinder walls in your engine block will need to be machined to match this bore size. It's always recommended to consult with your engine builder or refer to CP Pistons' specific installation guidelines for proper piston-to-wall clearance and ring gap settings, as these are critical for engine longevity and performance with forged components.