Banks 48778 Monster 4" Exhaust for 2004.5-2007 Dodge Ram 2500 & 3500 5.9L Cummins

Part #: 48778 UPC: 801279487789
Now $379.00
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Installation Instructions

Banks Monster Exhaust 48778 Details

  • Fits 2004.5 - 2007 (325 HP) Dodge Ram 5.9L Cummins Trucks
  • 4” Constant Diameter Cat-Back System
  • Mandrel-Bent Stainless Steel Construction
  • Lowers Exhaust Gas Temperatures
  • Improves Flow by up to 122%
  • Straight-Through Muffler
  • Exhaust Tip Not Included
  • 5 Year Manufacturer Warranty
  • Fits Standard/Regular Cab Long Bed & Crew (Quad) Cab Short Bed

Looking for that Banks “Monster” performance with a modest price? Then Banks’ new Monster® Sport is the “cool cat-back” exhaust system you are looking for. That’s because the Banks’ Monster Sport Exhaust is meticulously designed & tested to deliver cooler exhaust gas temperatures. Cooler EGT equals power. This 4" rugged, heavy-duty 100% stainless steel Monster of an exhaust system helps eliminate backpressure. With air-flows up to 122% better than your Duramax’s stock exhaust, Banks Monster Sport exhaust system is streamlined with heavy-wall tubing and constant-diameter bends — increasing your truck’s airflow while improving fuel economy. 

shown with optional 5" tip


With a name like Monster you might think the Banks Monster Sport exhaust system obnoxiously over-powers in-cab conversations and music — not so. Unlike the noisy drone of many straight-through mufflers, this Monster’s muffler is extensively sound-tested and engineered with a unique expansion chamber and spun ceramic, a very high-temperature packing. The result? A rich, authoritative exhaust note that isn’t domineering — yet massively improves flow over the stock muffler! Now that’s a Monster!


This product can expose you to chemicals which are known to the State of California to cause cancer. For more information go to
California Proposition 65 Notice
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