Borla XR-1 Multicore 2.5in Inlet 4in Outlet RDX 14in 2003-mazda-miata-se-esi1483290 Choose how you want to

Choose how you want to be heard and bolt on a BORLA®

performance gains

The system is made of T-304 stainless steel and comes with the Borla(r) Million Mile Warranty

Alternate muffler with Un-Notched necks is 40477

Borla XR-1 Multicore 2.5in Inlet 4in Outlet RDX 14in 2003-mazda-miata-se-esi1483290 Choose how you want toXR 1(r) Multi Core Racing Muffler. 2. 5" Center Inlet 2. 5" Center Outlet 4" Round x 14" Long Body 19" 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