Banks Power Monster Exhaust System 47784 / 47784-B

07-10 6.6L GM Duramax LMM EC/SB, EC/LB, CC/SB, CC/LB

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SKU NWD-47784
Tip Color

47784 / 47784-B

Banks Monster Exhaust with CoolCuff reduces dangerous temps as much as or more than stock while also cutting backpressure and improving fuel economy. Flows up to 80% better than stock.


  • Mandrel bent Stainless Steel construction
  • Virtually eliminates backpressure
  • Lowers exhaust gas temps
  • Dramatically improves flow
  • Maximum Airflow
  • Cuts backpressure by nearly 57%
  • 4 inch constant-diameter DPF-back system
  • Cool Cuff design reduces tailpipe temps as much or more than stock and way more than others
  • Includes CHROME or BLACK tip
  • Fits Extended cab, Short Bed to Crew Cab, Long Bed
Year Make Engine



6.6L Duramax LMM Engine, Extended Cab, Short Bed, Long Bed; Crew Cab, Short Bed, Long Bed