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

If you're building a high-performance Mitsubishi engine for serious racing or severe duty, these Wiseco forged pistons are a solid choice. Designed specifically for the 4G64 block when using 4G63 cylinder heads, this kit is engineered to handle the demands of E85 fuel with a 10.5:1 compression ratio. Wiseco has packed these pistons with features that go beyond standard replacement parts, aiming for both power and longevity in competitive applications.

Crafted from 2618 aluminum in the USA, these pistons offer improved tensile strength, which is crucial for handling the increased cylinder pressures found in performance builds. You'll find precision ring grooves, anti-detonation grooves, and other features designed to enhance ring seal and prevent detonation. The pistons also come with an ArmorGlide skirt coating, which helps reduce friction for quieter operation and resistance to seizure, a common concern in high-stress engines. The fully machined crown ensures consistent combustion chamber volume, and forced pin oiling helps keep the wrist pins properly lubricated under extreme conditions.

This set includes four pistons, each with an 86.00 mm bore and a 35.00 mm compression height, utilizing a 0.866-inch pin diameter. Keep in mind that these pistons are not CARB approved and cannot be shipped to California. For a complete build, you'll want to ensure you have all the necessary supporting components and follow the manufacturer's installation guidelines carefully.