The Borla XR-1 Raceline Sportsman muffler is a universal, weld-in racing muffler built on Borla's patented free-flow, flow-through design for the best balance of sound and power. Its compact 5 inch round by 8 inch body suits applications with limited space, and the reversible design adds installation flexibility. A high-temperature continuous-filament fiber (CFF) acoustic packing manages sound, while the 100 percent welded T-304 austenitic stainless steel construction resists rust and heat. The un-notched necks are made for weld-in installation, there is no logo embossment, and the natural mill finish can be brushed or polished before install. Made in the USA.
Specifications:
- Type: XR-1 Raceline Sportsman universal muffler
- Inlet: 3.5 in, center
- Outlet: 3.5 in, center
- Body: 5 in round x 8 in long
- Overall length: 13 in
- Material: T-304 austenitic stainless steel
- Construction: 100 percent welded, free-flow design
- Acoustic packing: high-temperature CFF
- Install: un-notched necks for weld-in; reversible; no logo embossment
- Finish: natural mill (brush or polish)
- Made in the USA
- Part number: 40004S
FAQ
Is the Borla 40004S a universal muffler?
Yes. It is a universal, reversible weld-in racing muffler with a 3.5 inch center inlet and outlet, sized to fit a wide range of custom and racing builds.
How is the 40004S installed?
It is a weld-in muffler with un-notched necks. The reversible design lets it be oriented either direction, and the natural mill finish can be brushed or polished before installation.
What are the dimensions of the 40004S?
The body is 5 inches round by 8 inches long with a 13 inch overall length, and both the inlet and outlet are 3.5 inch center connections.
Is the Borla XR-1 Sportsman muffler street legal?
It is a universal XR-1 Raceline racing muffler sold as a weld-in component. Emissions legality depends on the complete exhaust system and application, so confirm the requirements for your build and local area.
Is the 40004S made in the USA?
Yes. Like Borla's exhaust line, the XR-1 Sportsman muffler is made in the USA from T-304 stainless steel.
