This 2.5 in. diameter into dual 2 in. BORLA Axle-Back system was developed specifically for the Mazda CX-5. Our Axle-Back system replaces the factory rear muffler and is a direct bolt-on product for ease of installation. The system has been tuned for the CX-5’s 2.5L engine to provide the mellow Touring sound with no drone inside the vehi cle. The system features single 4 in. round bright chrome on T-304 stainless steel tips on each muffler assembly. BORLA Cat-Back & Axle-Back exhaust systems feature patented straight-through and multi-core technology to unleash hidden horsepower. Increased exhaust velocity adds power, driving excitement, fuel economy, and the distinctive BORLA Sound of Power respected by motoring enthusiasts everywhere. Each system is built from premium, high-quality T-304 austenitic stainless steel, superior to T-400 series knockoffs (such as 409), to give you the absolute best in performance and durability. Ultra-smooth mandrel bends ensure maximum f low & power, and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Best of all, BORLA stands behind every system with a Million-Mile Warranty. Just what you‘d expect from the world‘s most experienced (and most winning) exhaust brand. System Features: Axle-Back Exhaust System, Touring Sound Level, T-304 Stainless Steel Construction, 2.5 in. to dual 2 in. Pipe Diameter, 4 in. Round Poli shed T-304 Stainless Steel Tips, No-Drone, Bolt-On Installation, Million Mile Warranty.