2017-2019 Duramax 5" Downpipe Back Exhaust No Muffler (FLO-680NM)

  • Sale
  • $700.00
  • Regular price $951.03
Tax included. Shipping calculated at checkout.

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-680NM By FLO-PRO is a Downpipe-back exhaust system for the 2017-2019 L5P w/ 6.6L Duramax. It's the perfect kit if you're looking to remove all your stock components and replace it with high-performance & high-flow 5" piping. 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, improved flow, lower EGT's, and you'll have a much better sounding 6.6L!


  • 5" Downpipe Back Exhaust System
  • No Muffler - Straight Pipe
  • 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-680NM