The HS08SW4GST Invidia N1 Racing Cat Back Exhaust is specifically designed for 2008 - 2014 Subaru Impreza WRX and WRX STi sedans. It comes with new gaskets and hardware for easy installation. The exhaust is made of 304 stainless steel, ensuring durability. With a 3 - inch piping diameter and a 4 - inch titanium exhaust tip, it gives your car a sporty look. The non - resonated mid - pipe and single - exit design, along with a silencer, produce an aggressive sound. The exhaust hangers are welded onto OEM locations for a direct fit. If you're using the factory downpipe, you may need a cat back adapter from GrimmSpeed, Invidia, or Torque Solution.

Using this Invidia N1 Racing Cat Back Exhaust is a breeze. First, turn off your car and let the engine cool down. Then, remove the old, quiet exhaust system. You can easily install the new Invidia N1 exhaust as the hangers are welded onto the OEM locations, ensuring a direct fit. Once installed, start your car and enjoy the new sound. Note that if you're using the factory downpipe, you'll need a cat back adapter, which you can get from GrimmSpeed, Invidia, or Torque Solution. For maintenance, regularly check the gaskets and hardware for any signs of wear or looseness. Clean the 304 stainless steel body with a mild automotive cleaner to keep it looking good. Avoid using abrasive materials that could scratch the surface.