HS11STIG3S. Fitment: 2011 - 2014 Subaru Impreza WRX and WRX STi Sedans (wide body). Features: Comes with new gaskets and hardware. Made of 304 stainless steel. 3 - inch piping diameter and 4 - inch quad exhaust tips. Exhaust hangers are welded onto OEM locations for a direct fit. If you're into that sweet exhaust rumble, the Q300 for 11 - 14 sedans is a great choice. It has 3 - inch tubing, mandrel - bent, and CNC - cut flanges. If you have the factory downpipe, get the adapter for a perfect fit.

Using this exhaust is easy. Just follow the normal installation process for your vehicle. Since the exhaust hangers are welded onto the OEM locations, it should fit right in. As for maintenance, keep it clean. You can wash it with a mild soap and water solution regularly. When driving, avoid hitting rough objects on the road to prevent damage. If you notice any strange noises or issues, check the gaskets and hardware. And remember, if you have the factory downpipe, make sure to use the necessary adapter for a proper fit.