Wiseco Mitsu Evo 4-9 HD2 Asymmetric Skirt Gas Ported Bore 87.00mm - CR 10.5 Piston Set

Wiseco is well-known for making strong, reliable forged pistons that can handle serious abuse. This Professional Series piston set is built for the Mitsubishi Evo 4-9 models with the 4G63T engine, specifically for builders who push their engines hard. These aren't your average pistons; they're packed with features designed for heavy to severe duty race applications, giving you the confidence to remove your limits.

Crafted from 2618 aluminum right here in the USA, these pistons are forged and machined for improved tensile strength. You'll notice the precision ring grooves, anti-detonation grooves, and other features aimed at improving ring seal. A notable feature is the ArmorGlide skirt coating, which helps resist seizure, reduces friction, and contributes to quieter operation. The fully machined crown is also designed for optimal performance in high-stress builds.

This set includes four pistons, each with an 87.00 mm bore and a 10.5:1 compression ratio. They also feature forced pin oiling to ensure the wrist pins stay well-lubricated under extreme conditions. Keep in mind these pistons are not CARB approved and cannot be shipped to California. For serious builders, this set offers a well-built foundation for a high-performance engine.