Manley 00-03 Subaru WRX (EJ20) / 04 STi Exhaust 33mm Stainless Extreme Duty Valves

Manley Performance has a long history of building strong engine components for racing applications, and their Extreme Duty Series Valves are a prime example. If you're working on a high-performance Subaru Impreza from 2002 to 2012, especially one that sees demanding use, these exhaust valves are built to handle serious heat and stress. They're designed for situations where extreme force and heat resistance are critical, drawing on technology used in Top Fuel drag racing and marine engines.

These valves are constructed from Manley's XH-432 XtremeAlloy, a material chosen for its exceptional ability to withstand high temperatures and forces. To further enhance their durability, they feature chrome stems and hard tips, which significantly increase wear resistance and longevity. The under-head areas are swirl polished to help improve airflow into the combustion chamber, and the fully machined combustion faces contribute to better combustion efficiency. This attention to detail means you're getting a valve that not only lasts but also helps your engine perform at its best.

This set includes exhaust valves specifically for your Subaru Impreza, including the EJ20 engine found in the 2002-2003 WRX and the 2004 STi. When rebuilding or upgrading your engine, choosing valves that can reliably handle the demands placed upon them is crucial for long-term performance and reliability.