Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.55 Piston Shelf Stock Kit

If you're building a serious performance engine for your Subaru WRX or STI with the EJ257 engine, these Wiseco forged pistons are a solid choice. They're designed for demanding race applications where durability and strength are critical. The pistons feature a -19cc dish, a 99.55mm bore, and are made from 2618 aluminum, which offers improved tensile strength compared to other alloys.

Wiseco puts a lot of thought into the details with these pistons. You'll find precision ring grooves, an anti-detonation groove, and features that improve ring seal, all contributing to better performance and longevity. They also come with an ArmorGlide skirt coating that helps reduce friction and noise, and resists seizure. The fully machined crown ensures a clean combustion chamber surface. These pistons are built to handle heavy to severe duty performance use, and they include forced pin oiling for better lubrication.

This kit includes a set of four pistons. Keep in mind that these are not CARB approved and cannot be shipped to California. For a build like this, it's always a good idea to consult your engine builder or the manufacturer's instructions for any specific assembly or break-in procedures.