Wiseco Mitsubishi 4G63 2.0L Gen 2 w/ 156mm Long Rod 86.25mm Bore +.050 Oversize Dish Piston

If you're rebuilding the engine in your Mitsubishi 4G63 for serious performance, a set of forged pistons is a critical component. These Wiseco Professional Series pistons are built from 2618 aluminum, a well-known material for its improved tensile strength, making them suitable for heavy to severe duty race applications. The 86.25mm bore size, which is +.050 inch oversize, is precisely machined to ensure a proper fit within the cylinder block after honing.

Wiseco has packed these pistons with features to handle high performance demands. You'll find precision ring grooves, anti-detonation grooves, and additional features designed to improve ring seal, which is crucial for maintaining compression and preventing blow-by under stress. The piston crown is also fully machined for accuracy, and they come with forced pin oiling to keep the wrist pin lubricated. Additionally, the ArmorGlide skirt coating helps reduce friction and noise while resisting seizure, contributing to overall engine longevity in demanding conditions.

This set includes four pistons, each with a 28.70mm compression height and an 0.866 inch pin diameter, designed to work with a 156mm long rod. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a robust engine build aiming for maximum performance, these Wiseco pistons are a solid option.