Borla Universal XR-1 Multi-Core Racing Muffler for Round 3-1 2 IN 3-1 2 Out 16 x 6-1 4 - 40722 fits_2002-2008`Audi`A4 The result is incredible handling

The result is incredible handling and driver control that makes the most of your high performance Camaro suspension

Retains Factory Exhaust Tips

8L NA Open Diff

Flows 28% better (Closed Valve) and 17% (Open Valve) Better Than Stock

Borla Universal XR-1 Multi-Core Racing Muffler for Round 3-1 2 IN 3-1 2 Out 16 x 6-1 4 - 40722 fits_2002-2008`Audi`A4 The result is incredible handlingXR 1(r) Multi Core Racing Muffler. 3. 5" Center Inlet 3. 5" Center Outlet 6. 25" Round x 16" Long Body 21" Overall Length. Long body design works well on SUV & truck applications but can be used on a wide range of vehicles including rotary engine equipped vehicles. It features BORLA(r)'S patented Multi Core 6 tube design for maximum flow, horsepower, and torque. The Multi Core portion of XR 1(r) mufflers flows better than straight tubing. Recommend