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and the free-flowing design amplifies turbocharger spool and BPV sounds
2007-2025 Yamaha YZ250
Black Wires
2006 Yamaha RS90MS RS Vector Mountain SE
2020 Triumph Thruxton RS
Borla 401384 BOR XR-1 Mufflers tires-wheels-tire-wheel-kits and the free-flowing design amplifiesXR 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
