Subaru WRX STI 2004, System Type: Cat-Back. Exhaust System with Titanium Muffler by Agency Power®. The Cat-Back is designed for customers seeking increased performance and better economy, combined with a powerful and well tuned exhaust note, making a real statement within legal limits with a pleasing, deep and manly tone.
- Suitable for Everyday Driving
- Increases Power
- Increases Torque
- Every System Tuned on Dynamometer
- Perfect Fitment
The Cat-Back system can improve power, torque, responsiveness and mileage for any vehicle and bring true performance rumble to everyday drivers. The performance character of the sound is unmistakable, without being aggressive. It is a power sound that is perfect for long distance or commuter driving, a sound that shows off the muscle of the engine without tiring the driver or drawing unwanted attention from neighbors and law enforcement.
Agency Power Industries LLC was founded in 2003 in Gilbert, Arizona. It is committed to developing and engineering quality, functional, and innovative racing parts and accessories for the aftermarket. Agency Power proves its parts on a dynamometer and in track competition to make sure they will perform at their maximum potential and stand the test of time. Agency Power has pioneered a number of products that hit the industry and are unrivaled by competitors. With an endeavor to become one of the leading performance parts manufacturers, Agency Power puts heart and soul into creating top-of-the-line upgrades that respond to the challenges of the rapidly developing automotive market.