New products have just arrived

2017-2019 Duramax C&C 5" Downpipe Back Exhaust No Muffler


2017-2019 Duramax 5" C&C Downpipe Back Exhaust No Muffler (FLO-687NM)

Fits: 2017-2019 GM L5P 3500 w/ 6.6L Duramax 4-Bolt Flange - Cab & Chassis Crew Cab

The FLO-687NM By FLO-PRO is a Downpipe back exhaust system for the 2017-2019 L5P w/ 6.6L Duramax Cab & Chassis. It's the perfect kit if you're looking to remove all your stock components and replace it with high-performance & high-flow 4" piping. You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!


  • 4" Downpipe Back Exhaust System
  • No Muffler - Straight Pipe
  • Increased Torque & Fuel Mileage
  • Aluminized
  • Easy Installation

Part Number: FLO-687NM