CP Piston & Ring Set for Mazda DISI MZR 2.3L - Bore (87.5mm) - Size (STD) - CR (9.5) - Set of 4

If you're rebuilding the engine in your Mazda DISI MZR 2.3L, especially for performance applications, a solid set of pistons is crucial. This set from CP Pistons is built to handle the demands of a high-performance engine, offering a strong foundation for your build. These pistons are designed with a standard bore of 87.5mm and a compression ratio of 9.5:1, making them a direct replacement for stock specifications while providing the durability needed for modified engines.

CP Pistons are well-known for their forged construction, which means they start as a solid block of aluminum that's heated and hammered into shape. This process creates a much stronger and more resilient piston than cast aluminum, allowing them to withstand higher cylinder pressures and temperatures without deforming or failing. This particular set is a standard size (STD), meaning they're meant to fit within a standard cylinder bore, simplifying the machining process for your engine builder. The 9.5:1 compression ratio is a popular choice for many performance builds, offering a good balance between power output and drivability, and is suitable for use with forced induction or naturally aspirated setups.

This set includes four pistons and their corresponding rings, providing everything you need to replace the pistons in your four-cylinder engine. It's important to note that these pistons are not CARB approved and cannot be shipped to California. Always consult with your engine builder or a qualified mechanic to ensure these pistons are the right choice for your specific build and to confirm any necessary machining or installation procedures.