CP Piston & Ring Set for Nissan SR20DE/DET - Bore (86mm) - Size (STD) - CR (8.5)

This kit includes a full set of four forged pistons and matching rings, specifically made for the Nissan SR20DE and SR20DET engines found in the 1989-1998 240SX. These pistons are designed to replace your stock ones, offering a robust upgrade for builds aiming for more power or durability. The standard 86mm bore size means they'll fit directly into a freshly machined block, and the 8.5:1 compression ratio is a solid choice for forced induction applications or for those looking for a reliable street setup that can handle boost.

CP Pistons is known for making well-built internal engine components, and these pistons are no exception. They're forged from high-strength aluminum alloy, which is much stronger and more resistant to detonation than cast aluminum. This makes them ideal for engines that will see higher cylinder pressures, whether from turbocharging, supercharging, or higher octane fuels. The set comes complete with the necessary rings, ready for installation by your machine shop. This is a popular choice for enthusiasts rebuilding or modifying their SR20 engines, providing a strong foundation for increased performance.

When installing these pistons, ensure your engine block is properly bored and honed to the exact 86mm specification. Proper ring gap setting is also crucial for optimal performance and engine longevity, so be sure to follow the manufacturer's guidelines. This set is a significant upgrade for anyone serious about building a reliable and powerful SR20 engine.