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50 Series HD

The 50 Series HD Heavy Duty Muffler is appropriately named, a tough customer just like the trucks it was designed for. With 4.00-inch internal components and large case size, these mufflers help to significantly increase mileage, torque, and horsepower while greatly improving towing power acceleration. The 50 Series Heavy Duty is great for all gas and diesel applications, and late-model trucks used in the most extreme working conditions. They are constructed of 16-gauge steel and fully MIG-welded for maximum durability. Stainless models carry a limited lifetime warranty.


  • Great for quieting large displacement engines
  • Works great with both gasoline and diesel applications
  • Large case features three-chamber internal design
  • Terrific power/torque improvement for tow vehicles
  • Specifically designed for Dodge trucks with Hemi engines


50 Series Delta Flow

Flowmaster 50 Series Delta Flow mufflers are designed to reduce interior sound and resonance, the 50 Series Delta Flow’s moderate exterior tone level is the result our advanced technology. This compact exterior case size muffler was especially designed for passenger cars rather than trucks or SUV’s. Featuring our unique Resonance Tuning Chamber, the 3-chamber 50 Series Delta Flow gives the same performance as the two chambered Flowmaster mufflers and delivers increased engine efficiency for better power and mileage.


  • Moderate tone – perfect for performance and passenger cars
  • 409S Stainless Steel version backed by lifetime warranty
  • Features advanced three-chamber design
  • Delta Flow internal technology
  • Available in aluminized steel or 409S Stainless Steel
  • Both styles are fully MIG-welded for maximum durability


Super 50

The Super 50 Series incorporates an increased case size with the innovative technology found in the 50 Series Delta Flow mufflers. The Super 50 Series’ large tuning chamber allows for optimum exhaust flow, increased mileage and reduced interior resonance. This muffler is especially suited for trucks and SUVs as well as full-sized, high performance street cars looking to reduce interior resonance and tone levels for everyday driving.


  • The most versatile muffler we make for a wide variety of applications
  • Excellent choice for muscle cars and performance street machine
  • Features three chamber Delta Flow Technology
  • Constructed of 16-gauge aluminized steel or 409S Stainless Steek
  • Fuly MIG-welded for maximum durability

50 Series Big Block

Our largest and quietest muffler, the 50 Series Big Block Mufflers is made for tow vehicles, full-size trucks, large SUV’s and RV’s/Motor homes. More than just compatible with big cubic inch engine application, the 50 Series Big Block incorporates a very large Resonance Tuning Chamber to almost completely reduce interior sound in large cab vehicle and enough case volume to handle engines under heavy loads – perfect for tow vehicle. Significant improvements in mileage, torque, and horsepower are to be expected from this muffler, as well as decreased engine heat and wear.


  • The quietest Flowmaster® we make!
  • Available in 16-gauge aluminized steel
  • Fully MIG-welded for maximum warranty
  • Greatly reduces interior sound and resonance
 

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Having problems with check engine light on after installing outlaw catback exhaust made sure everything is done properly watched several YouTube videos???
We are sorry to hear that. Give our Tech Line a call at 707-544-4761 so that we can dig a little deeper into this and attempt to troubleshoot your situation.
 

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I have a 2016 SRT 392 Challenger and am considering replacing the mid mufflers with either Delta Flow 50's, Delta Flow 40's or the Laminar Flow Pro Series. Going to keep the resonators in the back. The goal is to reduce drone/resonance between the 1700 - 1900 rpm range. From what I understand, both the stock mid mufflers and resonators are flow-through designs, with the mid mufflers defining the tone of the exhaust and the resonators defining the loudness and tuning out certain sound waves to minimize drone. Attached is a pic of the mid muffler. If this is the "stock" muffler, which product could I consider to change the exhaust tone and mitigate drone?
 

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