Supertech Nissan RB20 2.0L 79.00mm (+1) 32mm CH +1.3cc Dome 8.5:1 CR Piston - Set of 6 (Excl Rings)

Supertech is well-known for making robust engine components, and this set of six forged pistons for the Nissan RB20 2.0L engine is a prime example. If you're rebuilding or modifying your RB20, these pistons are built to handle increased stress and performance demands. They are designed to be a 79.00mm bore size, which is a +1mm overbore from the stock 78mm, allowing for a fresh cylinder wall surface and potentially a slight increase in displacement. The dome volume is +1.3cc, and combined with the 32mm compression height, this results in a compression ratio of 8.5:1, making them suitable for boosted applications where lower compression is often desired to prevent detonation.

These pistons are forged, meaning they start as a solid block of aluminum that is heated and hammered into shape under extreme pressure. This process creates a much stronger and more durable piston than cast aluminum, making them resistant to deformation and failure under high cylinder pressures and temperatures. The 8.5:1 compression ratio is a notable choice for builders looking to add a turbocharger or supercharger to their RB20. This lower ratio helps keep combustion temperatures in check and provides more room for boost before encountering pre-ignition or detonation issues. Remember that this set does not include piston rings, so you will need to source those separately to complete the installation.

When planning your RB20 build, consider that these pistons are not CARB approved and cannot be shipped to California. It's always a good practice to consult with your engine builder or a trusted mechanic to ensure these pistons align with your specific performance goals and the other components in your engine assembly. Proper installation and tuning are critical for achieving the desired performance and longevity from any engine build.