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2007.5-2010 Duramax Flo Pro 5" Downpipe Back Exhaust No Muffler


2007.5-2010 Duramax 5" Downpipe Back Exhaust No Muffler (FLO-634NM)

Fits: 2007.5-2010 GM LMM Pickup w/ 6.6L Duramax - All Wheelbase

The FLO 634NM is a 5" Downpipe Back Exhaust system for the 2007.5-2010 Duramax 6.6L. It replaces your restrictive OE exhaust system from the downpipe back with a 5" mandrel bent exhaust system, this kit does not include a muffler and is designed for race applications. This exhaust not only sounds great, but will improve your torque, mileage, and throttle response!


  • 5" Downpipe Back Exhaust system.
  • Aluminized Steel & Stainless Steel
  • Single Side Exit
  • Easy Install - Mounts to OE Hangers
  • No Muffler

Part Number: FLO-634NM