HS08SW5GTT. Fitment: This exhaust fits 2008 - 2014 Subaru Impreza WRX Hatchbacks perfectly. Features: It comes with new gaskets and hardware. Constructed from 304 stainless steel, it's durable. The 3 - inch piping diameter and 4 - inch titanium exhaust tips give it a great look and performance. The resonated mid - pipe and single - exit design provide a unique sound. It also includes a silencer. The exhaust hangers are welded onto OEM locations for a direct fit. Notes: The Invidia N1 is one of the best - sounding, fitting, and looking cat - backs for your GR/GH WRX. Installation is a breeze - just remove the old quiet exhaust, install the Invidia N1, and start your car. If you're using the factory downpipe, you may need a catback adapter from GrimmSpeed, Invidia, or Torque Solution.

Using this Invidia N1 cat - back exhaust is simple. First, turn off your car and let the engine cool down. Then, remove the old exhaust carefully. You'll find all the necessary gaskets and hardware included with the product, so use them to install the new exhaust. Make sure the exhaust hangers fit well into the OEM locations. Once installed, start your car to check if it works properly. When it comes to maintenance, regularly inspect the exhaust for any signs of damage or rust. Since it's made of 304 stainless steel, it's quite durable, but a gentle cleaning every few months can keep it looking great. If you notice any unusual noises or vibrations, it might be a good idea to have it checked by a professional. Also, remember that if you're using the factory downpipe, you'll need an appropriate catback adapter as mentioned in the product notes.