
This exhaust system isn’t called “Monster” just to sound cool. That’s because the Banks’ Monster® Exhaust is a meticulously designed & tested system that actually delivers cooler exhaust gas temperatures. Cooler EGT equals power. This 4" rugged, heavy-duty 100% stainless steel Monster of an exhaust system significantly cuts backpressure by up to 81%. With air-flows nearly twice that of your Powerstroke’s stock exhaust, Banks Monster exhaust system is streamlined with heavy-wall tubing and constant-diameter bends — maximizing your truck’s airflow. The optional Banks Power Elbow removes any remaining restrictions — slashing outlet and pipe backpressure up to an additional 81%!
Key Features
- Extensively tested & validated
- Improves flow — massive reduction in backpressure
- 100% stainless steel — no aluminum here!
- Giant 5" polished rolled-edge tip
- Muffler’s expansion chamber cuts obnoxious noise
- Optional Power Elbow cuts backpressure up to 81%
- Won’t void factory warranty
- Lifetime Limited Warranty

With a name like Monster you might think the Banks Monster 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 it more than doubles the Powerstroke’s stock muffler’s flow! Now that’s a Monster!

How would you finish off this expertly engineered Monster? Banks has crowned their Monster exhaust system with a 5" rolled edged tailpipe of polished-stainless steel. It’s double-walled design features a 1/2" air gap — preventing heat from tarnishing its mirror finish. This Monster’s crown adjusts with a clamp, letting you decide its position on the tailpipe. All considered, the 4" Banks’ Monster is one cool exhaust system.

Banks Monster Exhaust will fit 1999 – 2003 Ford F-250 & F-350 Super Duty Powerstroke pickup trucks:
Comes without Power Elbow
| Part # | Model Year | Catalytic Converter | ||
| 48655 | 1999 | Yes | ||
| 48656 | 1999-2003 | No | ||
| 48657 | 2001-2003 | Yes (275-hp rated) |
Comes with Power Elbow
| Part # | Model Year | Catalytic Converter | ||
| 48658 | 1999 | Yes | ||
| 48659 | 1999-2003 | No | ||
| 48660 | 2001-2003 | Yes (275-hp rated) |

Links
- Manufacturer Product Web Pages
Product Installation Manual - Manufacturer Product Support
- Manufacturer Warranty
Manufacturer Contact Info:
800-601-8072
Gale Banks Engineering
546 S. Duggan Avenue
Azusa, CA 91702








