GReddy 15-21 Subaru WRX/STI Power Extreme Tr

This is the GReddy Power Extreme Tr cat-back exhaust system for the 2015-2021 Subaru WRX and STI. If you're looking to change the sound and performance of your turbocharged Subaru, a cat-back system like this is a popular choice. It replaces the factory exhaust from the catalytic converter back, typically improving exhaust flow and giving your car a more aggressive tone.

GReddy is well-known for its performance exhaust components, and the Power Extreme Tr series is designed to offer a noticeable improvement in sound and a more direct path for exhaust gases. This system is constructed from stainless steel, which is chosen for its durability and resistance to corrosion, especially important for an exhaust system that's exposed to the elements. The larger diameter piping and freer-flowing muffler design help reduce backpressure, which can lead to a slight increase in horsepower and throttle response. You can expect a deeper, sportier exhaust note that lets people know your WRX or STI means business, without being overly raspy or droney at cruising speeds.

When installing a cat-back exhaust, you'll typically be working with bolt-on connections, meaning no welding is required. It's a good idea to have a helper and some penetrating oil on hand for stubborn factory bolts. This system is designed to fit the 2015-2021 WRX and STI models, so it should bolt up cleanly to the factory mid-pipe connection point. Make sure to check the manufacturer's installation instructions for any specific torque recommendations or alignment tips.