The wait is over! Extreme Turbo Systems is proud to release our new Subaru STI V2 MaxFlow Exhaust Header for the 2004+ Subaru STI. We designed our ETS V2 MaxFlow Header to be a direct factory replacement header. We start off with large 1 7/8 primary runners that come together in a true low angle 4-1 merge collector that then flow into a huge 2.5" secondary for maximum scavenging and exhaust flow. Features 1 7/8" primary runners with 2 1/2" secondary for maximum flow. CNC mandrel bent runners. Custom .100 USA made thick wall tubing for durability. Low angle 4-1 merge collector for maximum flow and exhaust scavenging. Slip fit connection for ease of removal and installation. 2-Bolt , 3-Bolt, or V-band up pipe flange options. Stock replacement design. Low profile design for maximum clearance. Confirmed Fitment with XL Oil Pans like IAG and KillerB Surfaced flanges for a leak free seal. 304 Stainless steel construction. 100% built in house and made in the USA. Check out this awesome video by Dustin Williams.
