Wiseco Mitsu 4G64 w/4G63 Heads 10.5:1 E85 Piston Kit

Forged from 2618 aluminum, these Wiseco pistons are built for serious performance builds, especially when running E85 fuel. They're designed for Mitsubishi 4G64 engines that are using 4G63 cylinder heads, with a bore size of 85.25 mm and a compression ratio of 10.5:1. This specific material choice gives them improved tensile strength, which is crucial for handling the higher cylinder pressures found in performance applications.

Wiseco has packed a lot of thought into the details here. You'll find precision ring grooves, an anti-detonation groove, and other features aimed at improving ring seal. The piston crown is fully machined for accuracy, and they even include forced pin oiling to keep the wrist pins well-lubricated under stress. Plus, the ArmorGlide skirt coating helps reduce friction and noise, while also making them more resistant to seizure.

This set is intended for heavy to severe duty race builds. It includes four pistons, and they come with premium rings. Keep in mind that these are not CARB approved and cannot be shipped to California. For builders pushing the limits of their Mitsubishi engines, this Wiseco kit is a solid foundation.