Wiseco 2008+ Mitsubishi 4B11 EVO X 86.75mm Bore 0.03 Oversize 86mm Strk 3.5cc Vol 10.5:1 - Set of 4

If you're building a high-performance Mitsubishi 4B11 engine for your EVO X, these forged piston sets from Wiseco are a solid choice. Designed for serious racers and builders, these pistons are made in the USA from 2618 aluminum, which offers improved tensile strength for demanding applications. The 86.75mm bore size is 0.030 inches larger than stock, accounting for potential cylinder wall wear or for a specific build strategy.

Wiseco packs a lot of features into these pistons to ensure durability and performance. You'll find precision ring grooves, an anti-detonation groove, and other features designed to improve ring seal. The crown is fully machined for accuracy, and they include forced pin oiling to keep the wrist pins well-lubricated under high stress. Plus, the ArmorGlide skirt coating helps reduce friction and noise, while also resisting seizure.

This set includes four pistons, rings, and is designed to work with an 86mm stroke and a 3.5cc valve relief volume, resulting in a 10.5:1 compression ratio. Keep in mind these are not CARB approved and cannot be shipped to California. For heavy to severe duty performance builds, these Wiseco pistons are built to handle the stress.