Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 100mm Piston Shelf Stock *SINGLE PISTON ONLY*

This listing is for a single Wiseco forged piston designed for Subaru EJ257 engines. It features a 100mm bore and a -19cc dish, intended for shelf stock applications. Wiseco builds these pistons from 2618 aluminum, forged and machined in the USA, giving them improved tensile strength for demanding builds.

You'll find precision ring grooves, an anti-detonation groove, and other features designed to improve ring seal. The piston crown is fully machined, and it includes forced pin oiling for better lubrication. A notable feature is the ArmorGlide skirt coating, which helps reduce friction, makes operation quieter, and resists seizure, all contributing to better durability in heavy to severe duty performance applications.