Wiseco Mitsubishi 4G63 86.25 mm Bore 28.70 mm CH -4.00 CC Piston Set

Wiseco is well-known for making strong, reliable engine components, especially for performance applications. This Professional Series piston set is a prime example, built for serious racers and builders who push their Mitsubishi 4G63 engines hard. These aren't just replacement parts; they're designed from the ground up to handle the demands of heavy to severe duty race builds, removing limits for those who need top performance.

Each piston is forged and machined in the USA from 2618 aluminum, a material chosen for its improved tensile strength, which is crucial under high stress. You'll find precision ring grooves, an anti-detonation groove, and other features that work together to improve ring seal. They also come with an ArmorGlide skirt coating. This coating helps reduce friction, makes operation quieter, and resists seizure, all important factors when you're running an engine at its limits. The fully machined crown and forced pin oiling further contribute to their durability and performance in demanding situations.

This set includes four pistons, each with an 86.25 mm bore. Please note that these pistons are not CARB approved and cannot be shipped to California. If you're building a high-performance Mitsubishi 4G63, these pistons are a solid option for ensuring your engine can withstand the rigors of racing.