2008-2014 STI

It might be hard to imagine how reducing the mass of a pulley makes a car go faster, but accelerating a heavy factory pulley from say 3000-7000 RPM...

Blow off sound not to your taste? Want something as “sleeper” as possible? Don’t want your partner to know you’ve stuck a turbo on the daily (again...

Install a GFB Non-underdrive light-weight under-drive pulley kit and get better throttle response and more power! How do they do this? 1. Less weig...

One of the ways that you can improve the response in your engine is by adding a lightweight pulley set. Lightweight pullies have less rotational ma...

The GReddy 11-14 Subaru WRX/STI Sedan 76mm Single Side Cat-Back Revolution RS Exhaust offers superior performance with its full 3.0” diameter pipi...

The GReddy RS Race Cat back Exhaust System is specifically designed for the 08-14 Subaru STI hatchback and 11-14 WRX hatchback. This system boasts ...

If cars like yours typically suffer issues such as backfiring and stalling when using a fixed-ratio atmosphere-venting BOV, the Respons can help. B...

Control the sound of your BOV "ON-THE-FLY." Go on, admit it. There are times you wish you could have that signature turbo blow off sound, but you'r...

This Cusco Power Brace Rear Member is designed to reinforce the chassis, using a light-weight multi-point brace. This will bolster the stability of...

The BORLA® sound of power. Its been described as asonic shot of adrenaline. An intoxicating concert ofsteel, gears and combustion that echoes from ...

Wheel spacers are a great way to create brake clearance, add track width, prevent tire rub, and provide ideal wheel fitment on your 2015+ Subaru WR...