CP Piston & Ring Set for Honda D16Z6 +0.5mm Oversized Bore CR (10.5) Set of 4

This is a set of four forged pistons and rings from CP Pistons, specifically made for the 1992-1995 Honda Civic and Civic del Sol models equipped with the D16Z6 engine. These pistons are designed to be 0.5mm oversized, meaning they are intended for an engine block that has been bored out to accommodate them, and they feature a 10.5:1 compression ratio. This setup is a popular choice for enthusiasts looking to rebuild or upgrade their engine for improved performance.

CP Pistons are well-known for their robust construction, and these forged units are no exception. Forging is a process that shapes metal under extreme pressure, creating a denser, stronger grain structure than cast pistons. This makes them significantly more resistant to the high pressures and temperatures found in performance engines, reducing the risk of failure. The 10.5:1 compression ratio is a notable increase over stock, which can lead to more power and better throttle response when paired with appropriate tuning and supporting modifications. The included rings are designed to seal effectively against the cylinder walls, ensuring good compression and preventing oil from entering the combustion chamber.

When installing these pistons, remember that the engine block will need to be professionally bored and honed to the 0.5mm oversized specification. This ensures a proper fit and seal for the new pistons. It's also crucial to have the crankshaft balanced with these new components. Proper engine assembly and tuning are essential to realize the full benefits of this performance piston set and to ensure long-term reliability. Please note that this part is not CARB approved and cannot be shipped to California.