8525454 The Super 40® features Flowmaster's Delta Flow® technology. It's larger case profile provides the best of both worlds of performance and sound. The Super 40 has that deep powerful sound of the Original 40 series, but with a deeper tone, and all the benefits of extra performance and low interior resonance from the Delta Flow® technology. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability. Features: Excellent performance on high horsepower vehicles Noticeable interior resonance Deep Aggressive Sound Exhaust Note Durable fully welded 409SS stainless steel About Flowmaster Flowmaster® is a household name, and for good reason. They've built legendary exhaust systems and mufflers for decades, and now offer performance air intakes, catalytic converters, and headers to give your hot rod performance to match the iconic Flowmaster sound. SPECS Automotive Item Grade High Performance Body Height (in) 5 Body Length (in) 13.5 Body Width (in) 10 Brand Flowmaster Color Black Emission Code 5 Finish Paint Fitment Universal Inlet Connection Type Pipe Connection Inlet Diameter (in) 2.5 Inlet Position Dual Material 409 Stainless Steel Mount Type Uses New Hangers (Not Included) Muffler Series Super 40 Series Muffler Type Chambered Outlet Connection Type Pipe Connection Outlet Diameter (in) 2.5 Outlet Position Dual Overall Length (in) 19.5 Product Type Street Mufflers Reversible No Shape Oval Sound Level Aggressive Sound Type of Exhaust Muffler Type of Muffler Chambered Vehicle Type 4/6 CYL Engine Classic Muscle Car Late Model Muscle Car Street Rod Street/Strip Truck/SUV UPC 700042025299 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 8525454