Borla XR-1 Multi-Core 2.5in Center/Center 17in x 12in x 4in Round Racing Muffler 2009-harley-davidson-fxdf-fat-bob-esi2608814 From the C5R LeMans winning

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Borla XR-1 Multi-Core 2.5in Center/Center 17in x 12in x 4in Round Racing Muffler 2009-harley-davidson-fxdf-fat-bob-esi2608814 From the C5R LeMans winningXR 1(r) Multi Core Racing Muffler. 2. 5" Center Inlet 2. 5" Center Outlet 4" Round x 12" Long Body 17" Overall Length. Compact 4" diameter muffler body is perfect for applications with limited space and can be used on a wide range of vehicles. This muffler is sometimes referred to as a 'Hot Rod' muffler. It features BORLA(r)'S patented Multi Core 3 tube design for maximum flow, horsepower, and torque. The Multi Core portion of XR 1(r) mufflers flows