CP Piston & Ring Set for Mitsubishi 4B11 Evo X - Bore (89.5mm) - Set of 4 (Custom Pistons)

If you're building a high-performance Mitsubishi 4B11 engine for your Evo X, especially one that's going to see serious track time or aggressive street use, a strong set of custom pistons is a critical component. This set from CP Pistons is designed to handle the increased demands of a modified engine, offering a solid foundation for your build. These are not your average replacement pistons; they are forged from high-strength materials to withstand higher cylinder pressures and temperatures than stock cast pistons.

CP Pistons are well-known in the performance world for their robust construction. This set features a custom bore size of 89.5mm, which is a common upgrade for enthusiasts looking to increase displacement or fine-tune their engine's performance. The forged process creates a denser, more durable piston that resists deformation under extreme load, which is essential when you're pushing an engine beyond its factory limits. The set includes the pistons and rings, providing a complete package for your engine rebuild. Remember that these pistons are intended for custom builds and will require professional installation and tuning to achieve optimal performance and reliability.

When undertaking a performance engine build like this, it's important to consider all the supporting components. Ensure your connecting rods, crankshaft, and cylinder head are also up to the task. Proper balancing and machining of the engine block are also crucial for longevity and performance with custom forged pistons. Always refer to the manufacturer's installation guidelines for specific details regarding clearances and assembly.