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2011-2015 Duramax Flo Pro 5" Cat Back Race Exhaust No Muffler


2011-2015 Duramax 5" Cat Back Race Exhaust (FLO 661)

Fits: 2011-2015 GM LML w/ 6.6L Duramax

The FLO-822NM by FLO~PRO is a 4" Turbo-Back Exhuast System for the 6.5L GM Diesel. It allows you to drop our your restrictive OE exhaust system and replace it with a high-flow straight pipe exhaust system. It not only sounds great but will lower your EGT's, increase mileage, and increase torque in your 6.6L. This kit does not include a muffler and is intended for race use only!


  • 5" Turbo Back Exhaust
  • No Muffler
  • Increased Torque & Fuel Mileage
  • Aluminized or Stainless Steel
  • Single Rear Exit

Part Number: FLO 661