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2007.5-2010 Duramax Flo Pro 5" Downpipe Back Exhaust With Muffler


2007.5-2010 Duramax 5" Downpipe Back Exhaust System (FLO 634)

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

The FLO 634 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 includes a high-flow muffler and is designed for street applications. This exhaust not only sounds great, but will improve your torque, mileage, and throttle response!


  • 5" Downpipe Back Single Exhaust system.
  • Includes Muffler
  • Alumized Steel & Stainless Steel
  • Single Side Exit
  • Easy Install - Mounts to OE Hangers

Part Number: FLO-634