Borla XR-1 Multicore 2.5in Inlet 4in Outlet RDX 14in

If you're working on a classic car or a modern build where ground clearance is tight, fitting a performance muffler can be a real challenge. The Borla XR-1 Multicore muffler is designed specifically for these situations. Its compact diameter helps it tuck up where larger mufflers just won't fit, making it a popular choice for custom exhaust setups where space is at a premium.

This muffler uses Borla's patented Multicore design, which is essentially a series of perforated tubes surrounded by a high-temperature acoustic material. This setup effectively quiets the exhaust sound by absorbing sound waves, but it's engineered to do so without restricting exhaust flow. That means you get a more controlled sound without sacrificing the horsepower and torque you've worked to build. It's constructed from T-304 stainless steel with 100% welded seams, so it's built to last and resist corrosion, even in harsh conditions. You can even polish it to a mirror finish if you want that show-car look.

This is a universal muffler, meaning it's not made for one specific vehicle but can be adapted to many different applications. It's designed to be reversible, so you can install it with the inlet on either side of the muffler body. Keep in mind that as a universal part, professional installation is recommended to ensure it fits correctly and integrates properly with your existing exhaust system.