Wiseco Mitsubishi 4G63 7-Bolt 12cc Dish 8.5:1 Compression Piston Set

Wiseco is well-known for making strong, reliable internal engine components, especially for performance applications. This Professional Series piston set is a prime example, designed for serious racers and builders who push their Mitsubishi 4G63 7-bolt engines hard. If you're building a high-performance engine that needs to handle significant stress, these pistons are made to meet that challenge.

These pistons are forged and machined in the USA from 2618 aluminum, a material chosen for its improved tensile strength, which is crucial for handling the high pressures and temperatures found in racing engines. They feature precision ring grooves, an anti-detonation groove, and other features designed to improve ring seal, helping to keep combustion gases contained and power up. The crown is also fully machined for a clean, consistent surface. For added durability and smoother operation, the piston skirts are coated with ArmorGlide, which reduces friction and noise while resisting seizure.

Built to withstand heavy to severe duty performance applications, this set includes four pistons, each with a 12cc dish and an 8.5:1 compression ratio, suitable for a 85.25 mm bore. The forced pin oiling feature ensures the wrist pins receive adequate lubrication, a critical detail for longevity under extreme conditions. Please note that these pistons are not CARB approved and cannot be shipped to California.