Manley Exhaust Valves 32mm OEM Size Extreme Duty 2002-2014 WRX / 2004-2021 Subaru STI | 11137-8 EVO_2003-2004 This drop-in replacement for your

This drop-in replacement for your factory air filter is designed with four layers of oiled cotton media that significantly improve airflow while effectively trapping harmful contaminants

Tech springs utilize the latest spring and material technology to optimize comfort

and have reduced street drivability

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

No need to worry about a retune or anything else

Manley Exhaust Valves 32mm OEM Size Extreme Duty 2002-2014 WRX / 2004-2021 Subaru STI | 11137-8 EVO_2003-2004 This drop-in replacement for yourManley 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,