2017-2019 Duramax 4" Downpipe Back Exhaust No Muffler (FLO-880NM)

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  • $640.00
  • Regular price $873.07
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Fits: 2017-2019 GM L5P w/ 6.6L Duramax & 4-Bolt Flange

Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.

The FLO-880NM is a 4" Downpipe Back Exhaust System by FLO-PRO for the 2017-2019 L5P Duramax. It's the perfect kit if you're looking to remove your stock components and replace it with high-performance & high-flow 4" piping from your downpipe back! Just like all of Flo-Pro's Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you cruise through the installation process. You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!


  • 4" Downpipe-Back Exhaust System
  • OEM Style 4-Bolt Flange
  • No Muffler - Straight Pipe
  • No Bungs
  • Increased Torque & Fuel Mileage
  • Aluminized or Stainless Steel
  • Easy Installation


  • These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe! 

Part Number: FLO-880NM