Subaru WRX STI 2.5L 2008, Stainless Steel Axle-Back Exhaust System by Injen®. HP Gain: +18.1 hp. Torque Gain: +19.1 lbs. x ft. Includes: Quad Titanium Tips. Main Piping Diameter: 70mm. The perfect complement to your Injen air intake system is an Injen performance exhaust system. Each exhaust system is dyno-tuned together with the air intake system to achieve maximum horsepower and torque across the power band.
- Increases horsepower and torque
- Manufactured from 100% 304 stainless steel
- Straight through muffler design
- CNC mandrel bent tubing and CNC machined flanges
- Robotic Tig welded
- Backed by a limited 1-year warranty
- Proudly made in the USA
One of the most common questions that arise when enthusiasts modify their cars is whether aftermarket parts will work together: Will these wheels work with those brake calipers? Will those lights work with this grille guard? Wouldn’t it be great to be able to buy parts that were designed to work together as a system? You can with an Injen performance exhaust system. Injen exhaust systems are dyno-tuned with their air intake systems to produce the most power possible over a broad power band.
And Injen exhaust systems are manufactured using premium materials and modern techniques to ensure they fit perfectly and last for as long as you own your vehicle. All parts are made from 100% 304 grade stainless steel to prevent failure from rust and corrosion. All tubing is CNC mandrel bent, all flanges are CNC machined and all parts are robotic Tig welded to make sure your installation goes smoothly. Every Injen performance exhaust system comes complete with everything needed for installation, including comprehensive instructions.
Injen Technology Company, Ltd., based in Pomona, California, was formed as a sister company to RD Metal Works in 1998, to utilize the experience and design capabilities that RD Metal Works had gained designing and manufacturing air intake kits for leading air filter and intake manufacturers. Since that time, the company has made it a point to stay at the forefront of performance technology, continually setting new standards for quality and improving their engineering and manufacturing capabilities. This enables Injen to regularly introduce new, cutting edge products to market and has required the company to continually expand to meet the demand for those products. Today, Injen continues to set the industry benchmark for innovation, styling and technology.