CP Piston & Ring Set for Nissan SR20DE w/ Turbo - Bore (86.5mm) - Size (.5mm) - 8.5:1

CP Pistons is known for making strong, well-built internal engine components, and this forged piston and ring set for the Nissan SR20DE engine with a turbocharger is a prime example. If you're building or rebuilding a performance SR20DE, especially one that will see boost, these pistons are designed to handle the extra stress. They feature a specific 8.5:1 compression ratio, which is a common target for turbocharged applications to allow for safe and effective boost pressure without excessive detonation.

These aren't your average cast pistons. CP Pistons uses a high-strength forged aluminum alloy, which is significantly more durable and resistant to expansion under high heat and pressure compared to cast aluminum. This makes them ideal for engines that are pushed harder than stock. The bore size is 86.5mm, and these are a .5mm oversize set, meaning they are intended for engines that may have already been bored out or require a slightly larger piston to achieve a perfect cylinder seal. This precise sizing is crucial for proper ring seal and optimal engine performance.

This set includes the pistons and the necessary rings to complete the installation. When installing, ensure your cylinder walls are properly honed to match the piston and ring design for the best possible break-in and long-term performance. Because these are a performance part designed for boosted applications, it's important to have a robust engine management system in place to control fuel and timing accurately.