50 series HD, three chamber mufflers. Designed primarily for today's heavy duty gas and diesel trucks, this muffler will deliver improved performance, throttle response and mileage. Featuring a deeper, moderate tone with minimal resonance, it is ideal for trucks with modified engines. Constructed of 16 gauge 409S stainless steel material and fully MIG welded for maximum durability.Warranty Information:Limited LifetimeAutomotive Item Grade: High PerformanceBody Height: 5.000 in.Body Length: 18.000 in.Body Width: 10.000 in.California Proposition 65 Chemical Name 1: Nickel (metallic)California Proposition 65 Chemical Name 2: Chromium (hexavalent compounds)Color: BlackFitment: UniversalInlet Connection Type: PipeInlet Diameter: 2.500 in.Inlet Inside Diameter: 2.500 in.Inlet Outside Diameter: 2.500 in.Inlet Position: DualInlet Type: DualMain Piping Diameter: 2.500 in.Material: Stainless SteelMount Type: Uses New Hangers (Not Included)Muffler Series: 50 Series HDMuffler Type: ReflectionOutlet Connection Type: PipeOutlet Diameter: 2.500 in.Outlet Outside Diameter: 2.500 in.Outlet Position: DualOutlet Type: Dual OutletOverall Length: 23.000 in.Shape: OvalSound Level: ModerateTip Quantity: 0Title: Flowmaster 8525554 50 H.D. Muffler 409S - 2.50 Dual In / 2.50 Dual Out - Moderate SoundWARNING CA Proposition 65: YesWARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov