8425152 Super 10™ Series 409S stainless steel, single chamber mufflers. Intended for customers who desire the loudest and most aggressive sound they can find. Because these mufflers are so aggressive, they are recommended only for off highway use and not for street driven vehicles. These mufflers utilize the same patented Delta Flow® technology that is found in Flowmaster's other Super series mufflers to deliver maximum performance. Constructed of 16 gauge 409S stainless steel and fully MIG welded for maximum durability. Features: Race-Proven Delta Flow Technology Compact Size For Easy Fitment 409S Stainless Steel Construction Super 10 Sound Level 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) 4 Body Length (in) 6.5 Body Width (in) 9.5 Brand Flowmaster Color Black Emission Code 5 Finish Paint Fitment Universal Inlet Connection Type Pipe Connection Inlet Diameter (in) 2.5 Inlet Position Center Material 409 Stainless Steel Mount Type Uses New Hangers (Not Included) Muffler Series Super 10 Series Muffler Type Chambered Outlet Connection Type Pipe Connection Outlet Diameter (in) 2.25 Outlet Position Dual Overall Length (in) 12.5 Product Type Super 10 Muffler Reversible No Shape Oval Sound Level Aggressive Sound Type of Exhaust Muffler Type of Muffler Chambered Vehicle Type Classic Muscle Car Late Model Muscle Car Street Rod Street/Strip Truck/SUV UPC 700042023943 California Proposition 65 Chemical Name Chromium (hexavalent compounds) Nickel (Metallic) California Proposition 65 Required Yes Part Number 8425152