Borla Sportsman XR-1 Muffler 4in In/Out x 16in

Borla 40948 XR-1 Sportsman Racing Muffler – 4" Center/Center, 16" x 4.5" x 7.88" Engineered for maximum performance in demanding racing environments, the Borla 40948 XR-1 Sportsman Racing Muffler is built for serious competitors who refuse to compromise on flow, sound, or durability. Constructed from premium T-304 austenitic stainless steel, the XR-1 offers superior corrosion resistance compared to lesser 400-series steels, ensuring long service life even under extreme heat and track conditions. This muffler features a 4-inch inlet and outlet (center/center) configuration and a straight-through, reversible design, allowing for flexible installation and optimized exhaust flow. Its high-flow, race-proven internal core reduces backpressure, increases horsepower, and delivers the aggressive tone racers demand without unnecessary restrictions. Perfect for circle track, drag racing, and other motorsports applications where performance and sound quality matter, the XR-1 Sportsman is backed by Borla’s Million-Mile Warranty — a rare promise for a racing muffler. Specifications: - Inlet/Outlet: 4" center/center - Dimensions: 16" case length, 4.5" case diameter, 7.88" overall height - Reversible, straight-through design - T-304 stainless steel construction - Maximum flow for racing applications - Million-Mile Warranty Why Buy from Fenix Motorsports: We offer only the best in performance exhaust components, backed by expert knowledge and fast shipping. Every order reflects our commitment to Progress, Excellence, and Integrity.