Borla Sportsman XR-1 Shorty 4in In/Out x 12in Muffle

Borla 40947 XR-1 Sportsman Racing Muffler – 3.5" Center/Center When every fraction of a second matters, the Borla 40947 XR-1 Sportsman Racing Muffler delivers the performance edge you need. Built for demanding motorsports applications, this muffler combines Borla’s race-proven design with premium materials for unmatched performance and durability. Constructed from T-304 austenitic stainless steel, the XR-1 resists rust and heat degradation far better than lower-grade steels. The 3.5-inch inlet/outlet center-center configuration, paired with a straight-through, reversible design, maximizes exhaust flow and horsepower while keeping backpressure to a minimum. The XR-1’s internal race core is engineered for maximum flow and a powerful exhaust note, making it an ideal choice for circle track, drag racing, and other competitive applications. The reversible layout offers installation flexibility, while Borla’s Million-Mile Warranty provides peace of mind rarely seen in racing components. Specifications: Inlet/Outlet: 3.5" center/center Reversible, straight-through design T-304 stainless steel construction Built for maximum flow and horsepower Ideal for competitive motorsports Million-Mile Warranty Why Buy from Fenix Motorsports: We specialize in premium performance exhaust components, backed by expert product support, competitive pricing, and fast shipping. Every order is driven by our core values: Progress, Excellence, and Integrity.