Borla Universal XR-1 Multi-Core Racing Muffler for Round 3-1 2 IN 3-1 2 Out 16 x 6-1 4

This Borla XR-1 muffler uses a patented Multicore design, which means it actually flows better than a straight piece of pipe in testing. It's built from T-304 stainless steel, so you know it's going to hold up to track use and won't rust. This is a universal part, designed for racing applications where mufflers are required, but it's also a solid option for other vehicles needing a high-performance muffler.

The Multicore technology is key here, helping to manage sound while still allowing for high horsepower applications. It's packed with high-temperature stainless steel wool to prevent burnout and keep sound under control. The construction is 100% welded for strength, and the reversible design gives you flexibility during installation. If you're building a race car or just want a well-built, high-flow muffler, this Borla XR-1 is a strong contender.