CP Piston & Ring Set for Mitsubishi 4B11 Evo X - Bore (89mm) - Set of 4 (Custom Pistons)

If you're building a high-performance Mitsubishi 4B11 engine for your Evo X, a strong set of pistons is crucial. This set from CP Pistons is designed to handle the demands of a modified engine, offering a solid foundation for increased power and reliability. These are custom pistons, meaning they're built with specific performance goals in mind, moving beyond stock specifications to support significant upgrades.

CP Pistons are well-known in the performance world for their robust construction. These pistons are forged from high-strength aluminum alloy, a process that makes them significantly stronger and more durable than cast pistons. This strength is essential for withstanding the higher cylinder pressures and temperatures that come with performance tuning. The 89mm bore size is a common specification for the 4B11 engine, and this set includes all four pistons along with their matching rings, ready for installation. The custom nature of these pistons suggests they may feature updated crown designs or skirt coatings to optimize performance and reduce friction, though specific details would depend on the exact custom configuration.

When undertaking an engine build of this caliber, it's important to ensure all supporting components are up to the task. This piston set is a key piece for anyone looking to push their Evo X's engine beyond its factory limits. Remember that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.