Universal muffler. Reversible design. Multicore internal flow tube construction Recommended for Full-Bodied cars, and can be used on other applications Long body design works well on SUV …

Whether you're drag racing or Circle Track racing, Borla has an XR-1 racing muffler for you. In fact, the 16 in. Shootout mufflers are rated the highest-flowing mufflers on the market.

With a patented straight-through design and multicore technology, Borla XR-1 Mufflers actually outflowed a straight pipe in repeated testing. They use sound-absorbing stainless steel …

Borla 40086 XR-1 Sportsman XR-1 Sportsman Racing Muffler - 3.5" Center Inlet/ 3.5" Center Outlet 5" Round x 15" Long Body 20" Overall Length. Universal Part. Reversible Design.

Natural mill finish can be brushed or polished prior to installation. Hands down, BORLA®'s XR-1® raceline parts offer the best balance of sound and power. Best of all, it's made in the USA. …

The Borla XR-1 Racing Muffler is the perfect upgrade for automotive enthusiasts seeking unleashed power and an exhilarating sound. Engineered for peak performance, this racing …

Oval – BORLA XR1 is our number 1 selling racing muffler. Satisfies the needs of most racing applications because it is the lightest, most compact, and highest flowing racing muffler in its …

Featuring a patented uninterrupted-flow design and multi-core technology, BORLA's XR-1 mufflers actually outflow a straight piece of pipe in repeated testing. XR-1 race products are …

Jun 2, 2025 · Dramatically improve the power and sound of your Mustang or Lightning using Borlas stainless steel XR-1 Sportsman 2.5" muffler. Borlas XR-1 is part of the Raceline …

Borla XR-1 racing mufflers feature a straight-through design, are built with aircraft-quality T-304 stainless steel construction that will never rust, and are one piece for increased structural …