Borla XR-1 Single-Tip Cat Back Exhaust Subaru WRX / STI 2002-2007

Part #: 140075. The Borla XR-1 Single-Tip Catback Exhaust for the WRX and STI is a high - performance exhaust system. It features 3 - inch piping and Borla's patented XR - 1 multi - core muffler for great flow. Without a resonator like the Hush, it gives a deep, powerful sound. The part that connects to the downpipe is slip - fit and can be upgraded with a 3 - inch adapter later. The included downpipe section fits your stock downpipe perfectly, and the optional 3 - inch adapter can remove the bottleneck if you use a 3 - inch downpipe. It comes with Borla's million - mile warranty and is made of stainless steel. It's an excellent choice for your WRX or STi. Note: If you're using a stock j pipe or downpipe, the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046 is required.

Using this Borla XR - 1 Single - Tip Cat Back Exhaust is straightforward. First, check if your car is a 2002 - 2007 Subaru WRX or STI. If you have a stock j pipe or downpipe, make sure to get the GrimmSpeed Subaru Stock DP to Aftermarket 3 in. Catback Adapter p/n 077046. When installing, fit the included downpipe section to your stock downpipe. If you plan to use a 3 - inch downpipe later, you can easily add the optional 3 - inch adapter. As for maintenance, since it's made of stainless steel, it's quite durable. But it's a good idea to check the connections regularly to make sure they're tight. If you notice any unusual noises or performance issues, have it inspected right away. With Borla's million - mile warranty, you can have peace of mind while using this exhaust system.