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2011-2015 Duramax Flo Pro 4" Cat Back Race Exhaust No Muffler


2011-2015 Duramax 4" Downpipe Back Exhaust No Muffler (FLO 864NM)

Fits: 2011-2015 6.6L Duramax w/ V-band flange at Downpipe.

Looking to make more power and increase your MPG on your 2011-2015 Duramax? The FLO-864NM by Flo~Pro is your answer. It allows you to remove the restrictive OEM exhaust system and replace it with a free-flowing 4" exhaust system from downpipe back! The FLO-864NM doesn't include a muffler and is 'intended' for race applications!


  • 4" Downpipe Back Single Exhaust system. This setup does NOT include a muffler and is intended for Race Applications
  • Aluminized Steel
  • Single Side Exit
  • Easy Install - Mounts to OE Hangers

Part Number: FLO-864NM