Billy Boat Performance Exhaust is the first manufacturer to offer a 100% T-304 stainless steel exhaust system for the Audi RS6. This high-performance system begins at the factory catalytic converter with 2.5"" tubing and exits the center muffler with dual 3"" tubing. The 3"" tubing continues to fully-polished low-restriction mufflers that hang in the factory mounting location. This true-dual system finishes nicely with fully polished twin 3"" double-wall tips
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