• Superior 2618 Alloy Forgings: Our domestic 2618 alloy forgings offer unbeatable strength and performance. Upgrade your engine now! • Premium Chrome Moly Wrist Pins: Standard in our pistons, with upgrade options for extra durability. Get a more reliable engine! • Enhanced Ring Seal: Our strict standards for ring lands and grooves lead to better seal and more power. Boost your vehicle's performance!

This piston and ring set is perfect for Subaru WRX STi (EJ257) owners who want to upgrade their engine performance. Whether you're into racing or just daily driving, these parts will enhance your experience. The set has a STD stroke of 99.55mm and a +.05mm bore with an 8.5:1 dish. It's designed to work well in your car and give you more power and reliability.