2017-2019 Duramax 5" Downpipe Back Exhaust (FLO 680)

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  • $759.00
  • Regular price $1,028.98
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its: 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-680 is a 5" 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 5" piping from the 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!


  • 5" Downpipe Back Exhaust
  • Includes High-Flow Muffler
  • Increased Torque & Fuel Mileage
  • Aluminized or Stainless Steel


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

Part Number: FLO-680