CP Piston & Ring Set for Nissan SR20DE/DET - Bore (90mm) - Size (+4.0mm) - CR (8.5) Set of 4

If you're rebuilding the engine in your 1989-1998 Nissan 240SX for serious performance, a strong set of pistons is where you start. This set from CP Pistons is built for the SR20DE and SR20DET engines, featuring a 90mm bore and a 4.0mm oversize to accommodate engine modifications. The 8.5:1 compression ratio is a solid choice for boosted applications, offering a good balance between power and reliability when paired with forced induction.

CP Pistons are well-known in the performance world for their robust construction. These pistons are forged from high-strength aluminum alloy, which is much stronger and more durable than cast aluminum. This makes them resistant to the extreme pressures and temperatures found in high-performance or racing engines. The set includes the pistons and matching rings, all designed to work together for a proper seal and efficient combustion. This specific set is 4.0mm larger than the stock bore size, meaning your engine block will need to be machined to match these pistons for a perfect fit.

When building a performance SR20, using pistons designed for the stresses involved is critical. These CP Pistons are a popular choice for tuners and racers looking to push their engines beyond stock limits. Remember that this set is not CARB approved and cannot be shipped to California. Ensure your engine builder is aware of the oversize nature of these pistons, as it requires specific machining of the cylinder block.