Borla XR-1 Sportsman Racing Mufflers are engineered to provide excellent exhaust emission and internal power generation. These mufflers feature XR-1 Raceline Technology and are manufactured from T-304 stainless steel which offers long lasting durability. They are equipped with longer spikes ensuring maximum flow and power. These mufflers provide brilliant fuel economy and increase horsepower efficiently. They are corrosion resistant and ensure easy installation.