Billy Boat exhausts are characterized by their bolt-on, "no welding required" ease of installation. First, you or whoever you have installing your Billy Boat S3 exhaust system simply remove your Audi's stock exhaust. Then carefully remove the bubble wrap off of your sparkling new Billy Boat Performance Exhaust. Grab the clamps, nuts, and bolts out of the same box your new S3's exhaust came in, and turn your wrench a few times. Grab your keys, let your friends & neighbors gather around...and fire it up.

Aggressive, dominating precision flow out of the Billy Boat S3 exhaust system. This Special Forces-Grade T-304 stainless steel RT exhaust is a crowning achievement for B&B. By itself, the Challenger cuts a tank-like profile against the backdrop of our own Arizona desert testing grounds. Check out this roaring, blasting, romping fun for yourself!