Note: EJ20 Motors will require EJ25 Oil Pan and Pickup for installation. 06-07 WRX/STI and 03-08 Forester XT will need to modify OEM oil cooler assembly. Click here for instructions.

The wait is over! Extreme Turbo Systems is proud to release our new Subaru STI V2 MaxFlow Exhaust Header for the Subaru WRX and 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 or Vband up pipe flange options.
Stock replacement design.
Low profile design for maximum clearance.
Surfaced flanges for a leak free seal.
304 Stainless steel construction.
100% built in house and made in the USA.

Flange Options:

2-Bolt: Bolt on replacement to suit stock up-pipes or stock replacement 2-Bolt up-pipes (Cobb, Invidia, Perrin, Grimmspeed etc.)
3-Bolt: Bolt-on replacement to suit aftermarket headers with 3-Bolt up-pipe (PSR, Tomei, AVO, RCM, GT Spec etc.)
V-Band: Suitable only for ETS rotated turbo kit. Not confirmed to fit with any other aftermarket V-Band up pipe.

Vehicle Fitment:

Subaru WRX 94-14 (EJ20/EJ25 Single Scroll, EJ20 Requires 2.5L Oil Pan)
Subaru STI 94-21 (EJ20/EJ25 Single Scroll, EJ20 Requires 2.5L Oil Pan)
Subaru Forester 97-13 (EJ20/EJ25 Single Scroll, EJ20 Requires 2.5L Oil Pan)
Subaru Liberty 89-98, 07-09 (EJ20/EJ25 Single Scroll, EJ20 Requires 2.5L Oil Pan)

ETS In Stock