• Fast, Free Shipping

  • Price Match Guarantee

  • Family Owned

  • Award Winning Service

  • No-Hassle Returns

Flowmaster 70 Series Muffler

70 Series Muffler

  • The Flowmaster 70 Series Muffler is optimized for adding power to your truck, SUV, RV, or other towing rig
  • Designed to handle the large exhaust volume of oversize towing engines
  • Black Aluminized or Black Stainless steel and precision mig welds
  • Flowmaster Delta Flow technology provides excellent scavenging for the 70 Series Big Block II while minimizing interior resonance
  • Choose from a range of inlet/outlet configurations and sizes for your Flowmaster 70 Series Muffler
  • Covered by a Flowmaster 3-Year Warranty

Maximize your flow, power, and efficiency with the Flowmaster 70 Series Big Block II Muffler. The Flowmaster Series 70 is built with a massive inner chamber to handle the displacement of larger towing engines. It also lets out a throaty tone without overpowering interior resonance.

The Flowmaster 70 Series Muffler is built from either bright corrosion-resistant Black Stainless Steel or black 16-gauge aluminized steel with precise mig welds for superior durability. The 70 Series features Flowmaster's exclusive Delta Flow technology, with precisely-placed deflectors that virtually eliminate interior resonance while aiding exhaust scavenging for maximized power and torque. The exterior sound is throaty and mild, and bold without being overpowering.

Flowmaster backs your 70 Series Big Block II Muffler with a 3 Year Warranty.

Flowmaster 70 Series Muffler Customer Reviews


Overall Rating:

4.8 of 5

Average Install Time: 1-2 hours


A very solid well built muffler. I could immediately feel some extra power on acceleration after installation.

Install Time: 1-2 hours