Wiseco Subaru EJ25 DOHC 4v InvDme -23cc 100mm Piston Shelf Stock Kit

If you're rebuilding the engine in your 1999-2011 Subaru Impreza, especially for demanding performance applications, this Wiseco forged piston kit is built to handle serious stress. These aren't your average pistons; they're designed from the ground up for racing and heavy-duty use, giving you the confidence to push your EJ25 engine hard.

Wiseco crafts these pistons in the USA from 2618 aluminum, a material chosen for its improved tensile strength, which is crucial when dealing with the high pressures and temperatures of performance engines. They feature precision ring grooves, anti-detonation grooves, and other features designed to improve ring seal and keep combustion contained. You'll also find an ArmorGlide skirt coating, which helps reduce friction and noise while resisting seizure, making for a quieter and more durable operation. The fully machined crown ensures accuracy and consistency for each piston in the set.

This kit includes everything you need for a set of four cylinders, with a 100mm bore size. Remember 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.