Wiseco Subaru EJ25 DOHC 4v InvDme -23cc 99.5 Piston Shelf Stock Kit

If you're rebuilding the engine in your 1999-2011 Subaru Impreza, especially for demanding performance applications, this set of four forged pistons from Wiseco is built to handle serious stress. These pistons are designed for the EJ25 DOHC engine and feature a -23cc dish, a 99.50 mm bore, and a 30.25 mm compression height, with a 0.9055 inch pin diameter. They are constructed from 2618 aluminum, a material chosen for its improved tensile strength, making them well-suited for heavy or severe duty race builds where durability is paramount.

Wiseco has incorporated several features to enhance performance and longevity. You'll find precision ring grooves, an anti-detonation groove, and additional ring seal improvements to ensure a tight seal and efficient combustion. The fully machined crown contributes to consistent performance, while forced pin oiling helps keep the pins lubricated under extreme conditions. Additionally, these pistons come with an ArmorGlide skirt coating, which helps reduce friction, resist seizure, and contribute to quieter operation. These pistons are forged and machined in the USA, reflecting a commitment to quality construction for serious racers and builders.

This kit includes everything needed to replace the pistons in your EJ25 engine. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to the manufacturer's installation instructions for proper fitment and assembly procedures.