Supertech Nissan RB20 2.0L 78.5mm Bore +1.3cc Dome 8.5:1 CR Pistons - Set of 6 (Excl Rings)

Supertech is well-known for making performance engine components, and this set of six pistons for the Nissan RB20 2.0L engine is a prime example. These pistons are designed to replace your stock ones, helping you rebuild or upgrade your engine with a specific compression ratio in mind. With a 78.5mm bore and a +1.3cc dome, they are engineered to achieve an 8.5:1 compression ratio, which is a solid choice for many performance applications where you might be running boost or want a slightly lower compression than stock for reliability.

These pistons are forged, meaning they start from a solid block of aluminum that is heated and hammered into shape. This process creates a much stronger and more durable piston than cast aluminum, making them well-suited for the demands of a performance engine. The dome shape is precisely calculated to work with the combustion chamber volume of the RB20 head to achieve the target 8.5:1 compression ratio. It's important to note that this set does not include piston rings, so you'll need to source those separately to complete the installation.

When rebuilding an engine, attention to detail is key. These pistons are designed as a direct replacement for the stock RB20 pistons, but it's always recommended to consult your engine's service manual for proper installation procedures and torque specifications. Because these are not CARB approved, they cannot be shipped to California. If you're looking to build a reliable RB20 engine for performance use, this set of Supertech pistons is a well-built foundation.