Manley Exhaust Valves 32mm OEM Size Extreme Duty 2002-2014 WRX / 2004-2021 Subaru STI | 11137-8 EVO_2003-2004 This AEM kit allows the

This AEM kit allows the user to safely run higher boost pressures and suppress detonation allowing the utilization of more timing and boost

you'll need to add this adapter so this exhaust will fit your narrow body hatchback and not have any leaks

The Legacy GT version of the Hi-Power dual exhaust features 2

and have reduced street drivability

(0-2200° F includes K-type Sender

Manley Exhaust Valves 32mm OEM Size Extreme Duty 2002-2014 WRX / 2004-2021 Subaru STI | 11137-8 EVO_2003-2004 This AEM kit allows theManley 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,