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2011-2013 Duramax Flo Pro 5" Cat Back Exhaust With Muffler


2011-2013 Duramax 5" Cat Back Exhaust (FLO 660)

Fits: 2011-2013 GM W/ 6.6L Duramax

The FLO-660 is a 5" Cat-Back Exhaust System by FLO-PRO for the 2011-2013 6.6L Duramax. It's the perfect kit if you're looking to remove your stock components and replace it with high-performance & high-flow 5" piping from the cat-back! You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!


  • 5" Cat Back Exhaust
  • Includes High-Flow Muffler
  • Increased Torque & Fuel Mileage
  • Aluminized or Stainless Steel

Part Number: FLO-660