Wiseco Mitsubishi 4G63 85.00 mm Bore 28.70 mm CH 1.90 CC Piston Set

Crafted in the USA from premium 2618 aluminum alloy, the Wiseco K676M85 piston set is designed for severe duty applications within the Mitsubishi 4G63 engine. This specialized alloy provides exceptional tensile strength, making these pistons highly resistant to the stresses encountered in high-boost, high-RPM environments. Each piston undergoes a meticulous forging process to ensure consistent quality and optimal performance, giving tuners and racers confidence in their engine's internal components.

These Wiseco pistons feature an 85.00mm bore size, a popular choice for upgraded 4G63 engine builds. The 28.70mm compression height is precisely machined to ensure proper fitment and optimal compression ratios for specific engine configurations. Advanced design elements such as precision ring grooves promote superior ring seal, crucial for maintaining cylinder pressure and maximizing power output. Additionally, anti-detonation grooves are incorporated to help mitigate the risk of harmful detonation, especially under aggressive tuning or elevated boost pressures.

Further enhancing their durability and performance, these pistons are equipped with Wiseco's proprietary ArmorGlide skirt coating. This advanced coating significantly reduces friction between the piston skirt and cylinder wall, minimizing wear and improving overall efficiency. It also contributes to quieter engine operation and provides excellent resistance to seizure, even in demanding conditions. Forced pin oiling ensures constant lubrication to the wrist pins, extending their lifespan and maintaining smooth operation.

The Wiseco K676M85 piston set is a testament to Wiseco's commitment to performance engineering. They are not merely replacement parts but a critical upgrade for anyone looking to push the boundaries of their Mitsubishi 4G63 engine. Whether for dedicated track use or a high-performance street build, these pistons provide the robust and reliable foundation needed to achieve significant power gains and long-lasting engine health.