Wiseco Mitsubishi Evo 4-9 HD2 - Single Piston

Forged from 2618 aluminum right here in the USA, this Wiseco HD2 piston is built for the demands of serious racing. The 86.50 mm bore size is specific for the Mitsubishi 4G63 engine found in Evos 4 through 9, and it features a 28.88 mm compression height. Wiseco engineers these pistons with precision ring grooves, anti-detonation grooves, and extra features to improve ring seal, all crucial for handling the high pressures of performance builds.

You'll also find an ArmorGlide skirt coating on this piston. This isn't just for looks; it helps reduce friction, resist seizure, and even makes operation quieter. The fully machined crown and forced pin oiling are further details that show these pistons are designed to withstand heavy to severe duty performance applications. If you're building a high-performance engine for racing or extreme street use, these pistons are a solid option.