Patented Multicore design for maximum power. Recommend for high horsepower applications. XR-1 Stainless Multicore Racing Mufflers.

BORLA? PERFORMANCE INDUSTRIES is the pioneer and leader in the design and manufacture of stainless steel performance exhaust. We began two decades ago as a manufacturer of exhaust systems for such...

BORLA XR-1 Raceline products are the choice of todays hottest drag and oval track racers. Featuring a patented uninerrupted-flow design and multicore technology. BORLAs XR-1 mufflers actually outflow...

T-304 Stainless steel will never rust. 100% welded construction for strength. Free Flow desgin for improved performance. Reversible design for installation flexibility. S-Type Universal Performance...