

Physical fitment.
Why consider a cheap, ill-fitting aluminized exhaust? Banks 4” Monster Exhaust is made of rugged, long-lasting 100% stainless steel. It fits better than the competition, because Monster Exhaust utilizes the factory hangers and maintains proper clearance to all under-vehicle components.
All flow, show and go!
With nearly five decades of engineering airflow improvements, Banks has mastered the art of maximizing flow while minimizing backpressure. The polished straight-through Monster Muffler, mandrel-bent head pipe assembly (non-cat-converter-equipped vehicles only), intermediate pipe(s) and tailpipe nearly triple the exhaust flow, cut backpressure up to 98%, lower exhaust gas temps and deliver more power to the ground. And the 5” polished rolled-edge tip has a double-walled design with a ½” air gap to keep heat from tarnishing the mirror finish.
Engineered to ditch the drone.
Many straight-through mufflers deliver an obnoxious drone that overpowers conversations. Banks Monster Muffler is extensively sound-tested and engineered with a unique expansion chamber and high-temperature packing. Instead of a drone, you’re treated to a rich exhaust note that’s authoritative, yet civil. It sounds as great as it looks!

| Application | Year Range | Part # |
|---|---|---|
| Monster exhaust system LB7 | Std cab, long bed | No cat converter | 2001-04 | 48628 |
| Monster exhaust system, 4" LB7 | Ext/crew cab, short bed | No cat converter | 2001-04 | 48629 |
| Monster exhaust system, 4" LB7 | Ext/crew cab, long bed | No cat converter | 2001-04 | 48630 |
| Monster exhaust LB7, LLY | Std cab, long bed | Cat converter | 2002-05 | 48632 |
| Monster exhaust system LB7, LLY | Ext/crew cab, short bed | Cat converter | 2002-05 | 48633 |
| Monster exhaust system, 4" LB7, LLY | Ext/crew cab, long bed | Cat converter | 2002-05 | 48634 |
| Exhaust- Monster Exhaust, Single Passenger side exit (LB7, LLY, LBZ) '01-07 (Part #96408) |
2005-04-15
Steve of Sarasota, Florida, installed a Six-Gun, Speed-Loader and Monster exhaust system on an ’02 GMC 2500HD with a Duramax 6.6L turbo-diesel
I pull a 12,000 pound construction trailer with my GMC 6.6 D/A 2500HD. I have installed the Six-Gun, Speed-Loader, and [Monster] Exhaust. WOW!! I recently towed 2,200 miles from Florida to Indiana and back. Mileage is way up. Exhaust temp is way down and the torque is Unbelievable. Without the trailer and just with a little spool up on the brakes at a red light, this thing will smoke just about any production street car. This is way more fun that any muscle car I have ever owned over the last 35 years. Thanks for your great products.
2005-02-07
Jim of West Columbia, Texas, installed a Six-Gun and a Monster Exhaust system on an ’01-04 K2500 Crew Cab Duramax LB7 6.6L turbo-diesel
I bought my new K2500 Crew Cab because I had just out-grown my old 1/2 ton. My business had expanded so much that my old truck was getting tired. I have always been a GM man and was getting so tired of the "Power choke" and "Wait, I'm Cummins" boys bash the DuraMax. I started to look at diesel "hop-up" products. I went with Banks because you are known for your milestone diesel enhancements with over all concern for safety and dependability. After the install I was shocked with the results that were achieved. I went out to show off my new toys, and found that even the other "chipped" diesels could not keep up! I wear my Banks stickers with pride because all the other guys are spending more money on other companies’ products trying to catch me (us). I wish they would only listen and call BANKS!
“Gale Banks Engineering is one of the world's foremost long-distance engine builders, as well as single and twin turbocharger designers and racers.”
Super Chevy