BOR XR-1 Mufflers

XR-1® Multi-Core Racing Muffler. 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" 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®'S patented Multi-Core 3 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. T-304 Stainless steel will never rust. Natural mill finish can be brushed or polished prior to installation. 100% welded construction for strength. High-temperature continuous-filament fiber (CRF) 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.

XR-1® Multi-Core Muffler Racing Muffler - 2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length. Universal Part. Reversible Design.

Borla XR-1 Low Profile Multicore 2.5IN Outlet/Inlet / 4IN x 16IN / 21IN OAL Round Muffler

Can be used on a wide range of vehicles. Sometimes referred to as a 'Hot Rod' muffler.

2.5" Center Inlet/ 2.5" Center Outlet 4" Round x 16" Long Body 21" Overall Length

Compact 4" diameter muffler body is perfect for applications with limited space

Universal muffler. Reversible design.

Multi-Core 3 tube internal design

BORLA® XR-1 Multi-Core Muffler

XR-1 Multicore Muffler

XR-1 Raceline Muffler

Exhaust Muffler

XR-1 Multi-Core