Flowmaster 425102-FM FlowMonster 1-Chamber Muffler 2.5 In / 2.25 Dual


  • FlowMonster Single-Chamber Muffler
  • 2.5 Center In / 2.25 Dual Out
  • Welded Aluminized Steel Construction
  • Same great sound at a fraction of the price!
SKU: FLO425102-FM Category:

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
  • 1-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
Weight 5.45 lbs
Dimensions 13.2 × 4.5 × 10 in



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Prop65WARNING: These auto parts can expose you to chemicals including phthalates and lead. Installing or using these parts can expose you to other parts containing these chemicals and to engine exhaust, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to