Manley Exhaust Valves 33mm (1mm Oversized) Extreme Duty 2002-2014 WRX / 2004-2021 Subaru STI | 11139-8 Vehicle Model_IS F giving the AMS Subaru EJ

giving the AMS Subaru EJ Intake Manifold exceptional flow

the fully hand-welded 304 Stainless-Steel exhausts carry a Limited Lifetime Warranty

Designed for enthusiasts who want maximum control without sacrificing ride comfort

* Holding capacity 170% over stock

Manley Exhaust Valves 33mm (1mm Oversized) Extreme Duty 2002-2014 WRX / 2004-2021 Subaru STI | 11139-8 Vehicle Model_IS F giving the AMS Subaru EJManley Performance has been manufacturing the finest stainless steel valves for over 40 years. Manley valves have been the standard of the industry from their inception, a fact that still remains true as they shift their focus and resources to the Sport Compact Market. The Manley Stainless Race Valves feature chrome stems, hard tips, fully machined surfaces and swirl polishing under their heads. These valves are available in both stock and oversized,