Manley Mitsubishi 4G63/4G63T EVO VIII/IX 85mmSTD -2.5cc Dish Platinum Lightweight Piston Set w/Rings

These Manley Platinum Series pistons start with domestic 2618 alloy forgings, a material known for its strength and ability to handle high performance demands. They are specifically designed for the Mitsubishi 4G63 and 4G63T engines found in the EVO VIII and IX models, featuring an 85mm standard bore and a -2.5cc dish top. This dish volume is important for tuning compression ratios, working with specific cylinder head designs to achieve your target for street or track performance.

Manley puts a lot of thought into the profiles of these pistons. The cam and barrel skirt designs are proven to generate significant power while also being gentle on your cylinder walls, which helps extend engine life. They also pay close attention to the ring lands and grooves, machining them to strict standards. This precise machining is key for getting a solid seal from your piston rings, which directly translates to better power output and more efficient combustion. The included wrist pins are made from premium chrome moly, offering good durability for demanding builds.

When you're building a high-performance engine, the details matter. Manley's unique fixturing process allows them to machine the piston skirt and cut the ring grooves in a single operation. This ensures the ring grooves are perfectly square to the piston skirt, which is critical for optimal ring seal and preventing issues under high boost or stress. This set includes the pistons, rings, and wrist pins, giving you a solid foundation for your engine rebuild.