Wiseco Subaru EJ257 WRX/STI 4v Dish -19cc 99.75 Piston Shelf Stock Kit

Forged from 2618 aluminum, these Wiseco pistons are built for the demanding conditions of serious racing and high-performance engine builds. The 2618 alloy offers improved tensile strength, making these pistons a solid choice when you're pushing your Subaru EJ257 engine to its limits. Each piston features a -19cc dish, precisely machined to work with specific compression ratios for optimal performance in your WRX or STI.

Wiseco has packed these Professional Series pistons with features to enhance durability and performance. You'll find precision ring grooves, anti-detonation grooves, and other features designed to improve ring seal. The pistons also come with an ArmorGlide skirt coating, which helps reduce friction, resist seizure, and contribute to quieter operation. The fully machined crown and forced pin oiling further contribute to their ability to withstand heavy to severe duty applications. This kit includes four pistons, each with a 99.75 mm bore and a 30.70 mm compression height, using a 0.9055 inch pin diameter.

This kit is designed for builders who are serious about performance and durability. Please note that these pistons are not CARB approved and cannot be shipped to California. Always refer to manufacturer instructions for proper installation and compatibility with your specific engine build.