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Unleash your Monster with FlowMonster chambered mufflers. Hidden beneath your ride lies a powerful creature destined to dominate. FlowMonster chambered mufflers create an aggressive exhaust note giving a powerful voice to your car/truck/SUV. FlowMonster mufflers are constructed of 16-gauge aluminized steel and are 100% MIG welded for maximum strength and durability. The chambered design cancels out unwanted frequencies with no packing producing an aggressive exhaust note that will not change with time. FlowMonster mufflers are coated with high heat resistant silver paint for an aggressive look under your car. Hear the Roar with FlowMonster!


  • Produces an Aggressive sound
  • 2-Chamber Internal Design Cancels out Annoying High Pitch Frequencies
  • Increases Exhaust Flow for Increased Performance and Excellent Throttle Response
  • Constructed of Durable 16-gauge Aluminized Steel
  • 100% MIG Welded for Maximum Strength and Durability
  • Silver Painted Finish
  • Compact Design Accommodates Most Cars/Trucks/SUV’s


***Combine with the 2.25" Exhaust Starter Kit (for small sixes) to connect our header to the mufflers


See the video!

Flowmonster 2-Chamber Muffler

SKU: FMS-225

  • Automotive Item Grade High Performance
    Body Height (in) 4
    Body Length (in) 13
    Body Width (in) 9.75
    Brand Flowmonster
    Color Silver
    Emission Code 5
    Finish Paint
    Fitment Universal
    Inlet Connection Type Pipe Connection
    Inlet Diameter (in) 2.25
    Inlet Position Offset
    Material Aluminized Steel
    Mount Type Uses New Hangers (Not Included)
    Muffler Series 2-Chamber
    Muffler Type Chambered
    Outlet Connection Type Pipe Connection
    Outlet Diameter (in) 2.25
    Outlet Position Center
    Overall Length (in) 19
    Product Type Street Mufflers
    Reversible No
    Shape Oval
    Sound Level Aggressive Sound
    Type of Muffler Chambered
    Vehicle Type Classic Muscle Car
      Late Model Muscle Car
      Street Rod
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