Supertech Ford/Mazda 2.3L 87.5mm Bore -20cc Dish 9:1 CR Pistons - Set of 4 (Excl Rings)

Supertech is known for making well-built internal engine components, and this set of four forged pistons for Ford and Mazda 2.3L engines is a prime example. If you're rebuilding the heart of your engine, these pistons are designed to handle increased stress and performance demands. They feature a specific 87.5mm bore size and a -20cc dish volume, which helps achieve a 9:1 compression ratio when paired with the right cylinder head and gasket combination. This ratio is a solid choice for many performance applications, offering a good balance between power and drivability.

Forged pistons like these are significantly stronger than cast pistons. They start as a solid block of aluminum alloy that's heated and hammered into shape under immense pressure. This process aligns the grain structure of the metal, making them much more resistant to detonation, heat, and flexing under high cylinder pressures. The -20cc dish is a notable feature, indicating a specific volume removed from the piston crown to reduce the compression ratio, which is crucial for tuning and preventing pre-ignition, especially with forced induction or higher octane fuels. These pistons are built to fit right into your 2.3L engine, but remember they come without rings, so you'll need to source those separately to complete the assembly.

When undertaking an engine rebuild with these pistons, it's important to ensure all other components are up to the task. This includes proper balancing of the rotating assembly, correct bearing clearances, and a well-matched camshaft and cylinder head. Always refer to the manufacturer's installation instructions for precise measurements and assembly procedures to ensure optimal performance and longevity of your engine build.