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 has 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. You can use the optional 3 - inch adapter to remove the bottleneck if you plan to use a 3 - inch downpipe. Backed by Borla's million - mile warranty and 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 your Borla XR - 1 Single - Tip Cat Back Exhaust is straightforward. First, make sure you're using the right parts for your setup. If you have a stock j pipe or downpipe, install the GrimmSpeed adapter. The exhaust comes with a section that bolts perfectly to your stock downpipe. For future upgrades, you can use the 3 - inch adapter. When it comes to maintenance, since it's made of stainless steel, it's quite durable. But it's a good idea to check the bolts regularly to make sure they're tight. And if you notice any strange noises or changes in performance, it might be a sign to inspect the exhaust system more closely. Keep it clean to maintain its look and performance over time.