Supertech Mitsubishi 4G63 85.5mm Bore -9.5cc Dish 9:1 CR Piston- Set of 4 (+2mm Valves / Excl Rings)

If you're rebuilding the engine in your Mitsubishi 4G63, a solid set of pistons is crucial for performance and reliability. This Supertech piston set is built for those looking to get the most out of their 4-cylinder engine, especially when upgrading to +2mm valves. They feature a specific dish volume of -9.5cc, which helps achieve a 9:1 compression ratio, a popular choice for balanced street and track performance without going too extreme.

These pistons are forged from high-strength aluminum, a process that makes them significantly more durable and resistant to detonation than cast pistons. This strength is essential for handling the increased cylinder pressures that come with performance modifications. The 85.5mm bore size is a common upgrade for the 4G63, allowing for a slight increase in displacement. It's important to note that this set is designed to work with +2mm valves, so ensure your cylinder head is prepared for this modification. Rings are not included with this set, so you'll need to source those separately to complete the assembly.

When installing these pistons, proper cylinder preparation and ring gap setting are key. Always refer to the manufacturer's detailed installation instructions for precise measurements and procedures. This set is a well-built foundation for a performance-oriented 4G63 build, offering the strength and consistency needed for demanding applications.