Borla Exhaust Muffler - 4ALEXR1993

XR-1® Multi-Core Racing Muffler. This muffler design was run by the entire field at the 2023 Busch Light Clash At The Coliseum race. The part number 4ALEXR1993 that is used on this muffler is a nod to our co-founder Alex, the XR-1® Multi-core Muffler, and the year that the patent for the BORLA® Multi-Core muffler design was issued. 3" Center Inlet/ 3" Center Outlet 5" x 6.25" Oval x 13.5" Long Body 18.5" Overall Length. Designed for applications where a 5" X 6.25" oval body can be used. It features BORLA®'S patented Multi-Core 6 tube design for maximum flow, horsepower, and torque. The Multi-Core portion of XR-1® mufflers flows better than straight tubing. recommend for high horsepower applications. Reversible design for installation flexibility. Heavy duty 16 gauge body. T-304 Stainless steel will never rust. Brushed finish can be polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CFF) acoustic material for sound control. Best of all, it's made in the USA. Just what you'd expect from the world's most experienced (and most winning) exhaust brand