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Flowmaster Muffler 50 Series (2.75" Dual In / 2.5" Dual Out) Big Block Chambered 527504
Flowmaster Muffler 50 Series (2.75" Dual In / 2.5" Dual Out) Big Block Chambered 527504
Flowmaster Muffler 50 Series (2.75" Dual In / 2.5" Dual Out) Big Block Chambered 527504

Flowmaster Muffler 50 Series (2.75" Dual In / 2.5" Dual Out) Big Block Chambered 527504

Regular price
Sale price

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20 In Stock Ready to Ship

Fitment Information

  • Universal - Requires welding and fabrication

Specs & Features

  • 50 Series Flow®- 2.75" Dual In / 2.5" Dual Out - Mild Sound
  • Improved Horsepower, Torque and Engine Efficiency
  • Recommended for SUV/trucks/motorhomes/tow vehicles
  • Minimal interior resonance
  • Mild to stock exterior exhaust tone


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

    Product Description

    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 vehicles.

      Redline360 is an authorized Flowmaster dealer and sells only genuine Flowmaster products.

              Flowmaster Brand Logo

              Prop 65 Warning WARNING: Cancer and Reproductive Harm -

              More in this category
              Flowmaster 50 Series Mufflers
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            • Exhaust
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              Actual item may vary from picture