Flowmaster 70 Series Big Block II Muffler - 524703

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  • Flowmaster Exhaust | Part Number: FLW524703
  • Inlet Location:Dual Offset
  • Material:Aluminized Steel
  • Tube Size (Inlet/Outlet):2.25 Inches/3 Inches
  • Type of Muffler:Chambered
  • Fitment:Universal Fit
  • Outlet Location:Centered


The 70 Series Big Block Muffler uses a longer case for increased volume and added sound reduction that will still fit many applications where the wider 50 Series Big Block muffler will not fit. The 70 Series Big Block utilizes Flowmaster's patented Delta Flow Technology for maximum efficiency and minimum interior resonance. The 70 Series mufflers are perfect for high performance street cars, most trucks, SUVs, RVs and tow vehicles that require quiet operation with improved sound.

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For over 30 years, Flowmaster has been producing exhaust products to combat noise issues that first cropped up on race tracks in California. The question was how to reduce sound without compromising performance? Advanced engineering and ample testing set Flowmaster's product line apart from competitors and a few of their more noteworthy parts include chambered mufflers, laminar flow designs and high flow catalytic converters. We carry Jeep exhaust pipes, exhaust flanges and complete exhaust systems among other Flowmaster products. The company's patented technologies, innovative designs and focus on performance keep Flowmaster at the forefront of aftermarket exhaust manufacturers. Shop Flowmaster Exhaust Now