2008-2014 STI

The Killer B Motorsport Holy Header was developed using state of the art CAD software & simulations to determine optimal design to increase po...

When new, OEM rubber exhaust hangers are fine for the stock exhaust system. But they simply don't hold up or perform well in performance applicatio...

The PERRIN Performance Up-Pipe is one of the best ways to increase the power and throttle response on your Turbocharged Subaru.The PERRIN Big Tube ...

This is the Tomei Expreme Unequal Length Exhaust Manifold. This is a direct replacement for your factory exhaust manifold to save weight, improve t...

This is the Invidia Catted Divorced Wastegate Downpipe. The factory downpipe is highly restrictive by the nature of the design and begins right...

Torque Solution Exhaust Mount Our exhaust mounts will reduce exhaust movement and vibrations both under extreme racing conditions and daily stree...

The Perrin Catted Downpipe features a Divorced Wastegate and cat, this will seperate the exhaust gas exiting the downpipe, creating a smoother exh...

Get that plastic blob of an overflow tank out of your engine bay. Stock plastic tanks are prone to failure due to repeated hot and cold cycles, and...

Free up some engine bay space with the Mishimoto Subaru WRX/STI Plug-N-Play Aluminum Fan Shroud Kit! This kit bolts directly to your stock or Mishi...

The Exedy Stage 1 Organic Disc Clutch Kit is ideal for street and light horsepower track use with drivability that is similar to the stock clutch. ...

Running ethanol requires larger injectors, and certainly a stronger fuel pump. This is the AEM E-85 High Flow In-Tank Fuel Pump. This particular fu...

This is ACT's new Mod Twin 225 HD Rigid Race Clutch Kit. This particular clutch kit is ideal for high-horsepower AWD vehicles that experience aggre...

The AWE Tuning Track Edition Exhaust System is ideal for those looking for optimal exhaust flow that generates both horsepower and torque while pro...

The Air Lift Performance Air Suspension Kit are available for the front location and have been designed to provide the driver with the best of both...

This is the new Tomei BX-Series Ball-Bearing Turbocharger. The BX-Series is Tomei's latest ball-bearing turbocharger example that features the late...