This 2" diameter Borla(r) Axle-Back system developed for Subaru's sixth generation Outback has been specifically engineered for the 2.5L 4-cylinder engine. The S-Type sound level provides a more aggressive sound over stock and accentuates the Subaru Boxer engine rumble. Borla(r) ensures a comfortable driving experience and guarantees a drone-free exhaust system. Ultra-smooth mandrel bends ensure maximum flow & power and precision computer numerical control (CNC) manufacturing ensures an accurate fit. Our Axle-Back bolts on to the factory flange for ease of installation and features a 3.5" x 2.75" oval polished T-304 stainless steel exhaust tip. Whether you are driving through the city or taking the road less traveled choose Borla(r) for your adventures., Each Borla(r) Exhaust System is built from premium T-304 series stainless steel to give you the absolute best in performance and durability., System Features:, Axle-Back System, 3.5" x 2.75" Oval Polished, S-Type Sound Level, No-Drone, T-304 Stainless Steel Construction, Bolt-On Installation, Million Mile Warranty