Universal XR-1™ Sportsman Racing Exhaust Muffler by Borla®. Muffler Sound: Aggressive / Loud. Muffler Structure: Multi Core. Muffler Configuration: Center - Center. The Borla XR-1 Sportsman Muffler was developed for the race track to quiet engine noise without limiting power. The patented straight though muffler design reduces noise without restricting exhaust flow.
|Muffler Series: XR-1™|
|Inlet - Outlet Configuration: Center Inlet - Center Outlet|
|Muffler Sound: Aggressive / Loud|
|Muffler Structure: Multi Core|
- Reduces engine noise without restricting exhaust flow
- Patented straight-through muffler design reduces backpressure while absorbing sound waves
- Made from the finest austenitic stainless steel for long-lasting durability
- All welded construction
- Proudly made in the USA
In racing, every horsepower counts, so no competitor will use something that will reduce engine power. Yet, winning drivers in all forms of racing use Borla XR-1 Racing Mufflers. It’s because these racers have found that Borla mufflers cost them no power and the noise reduction reduces driver fatigue and increases driver awareness.
The Sportsman Oval is Borla’s bestselling racing muffler because it’s the lightest, most compact, and highest flowing racing muffler in its class. The Sportsman Round includes the same design features for applications requiring a compact, round muffler.
Borla’s patented straight through muffler design reduces restriction and increases exhaust gas velocity, making sure each cylinder is completely evacuated to make room for the incoming charge. This design absorbs the sound waves without disturbing the power waves.
Borla uses austenitic stainless steel in the construction of the XR-1 Mufflers, which contains high levels of nickel and chromium, to resist corrosion. This material is harder than the lower grade stainless steel used by the OEM manufacturers, yet is very ductile. Nevertheless, the increased hardness requires special equipment to form and bend. The muffler contains a stainless steel perforated tube wrapped with several layers of stainless steel sound absorbing material and a layer of ceramic sound absorbing, high temperature material, all contained in a fully welded stainless steel shell.
Borla® is the leading manufacturer of stainless steel performance exhaust products. The company began three decades ago making exhaust systems for concours classic Rolls Royce and Ferrari models, and gradually evolved to become the premier manufacturer of performance exhaust products for street, off-road and racing. Borla pioneered many improvements in the design of performance exhaust systems, holds several patents for innovative exhaust system technology, and has won numerous “Best New Product” awards. Today the company operates a state of the art research and development center in Oxnard, California, and makes all of its products at a world-class manufacturing facility in Johnson City, Tennessee.