Big Hoss® Bundle

Banks iQ upgradeBig Hoss Bundle is the ultimate engineered power system for Duramax sport applications.

Big Hoss is Banks' free-breathing intake and exhaust upgrades balanced with calibrated tuning PLUS the Techni-Cooler® Intercooler System. Forget "flash" power: now you've got head-snapping power (+130 hp and +244 lb-ft) with staying power! Big Hoss maximizes engine efficiency and constant-duty power and keeps exhaust gas temps in check. All gains measured at the rear wheels.

Everything in the Big Hoss Bundle is engineered to work together to maximize your engine's power, efficiency and durability. Big Hoss honors your vehicle by safely living within the limits of your engine and drivetrain. Your Duramax will run stronger and live longer!

Watch the featured video! This short segment from ESPN's Truck Stop gives an overview of the Big Hoss Bundle, as installed on professional snowboarder Tara Dakides' truck. (She's got an '03 Duramax, so there may be some variance between this system and the one made specifically for your truck.)

What does Truckin' magazine think of the LMM Big Hoss Bundle? Find out »

Pick your look! Big Hoss Bundle systems include Banks' exclusive 6" X 5" ob-round (patented design) angle-cut rolled-edge tailpipe tips in your choice of polished chrome-over stainless or high-temp black.

click for system photoclick for system photoclick for system photoclick for system photo


click for water-methanol videoclick for BIG DENSITY article

free test report


Here's the TEST REPORT
for your vehicle!

Get a hard copy in the mail »
View it right now online »


Stock vs. Big Hoss Bundle

6.6L Duramax | 2007 Chevy Silverado crew cab, short bed, single rear wheels with Allison 6-speed automatic trans

LMM horsepower

LMM torque

LMM test data

*Note: Six-Gun & Speed-Loader/Banks iQ are recommended for off-road/racing use only. Banks' results as tested on highest level of Six-Gun with Banks iQ and recommended airflow improvements.

Duramax expertsWho knows more about your Duramax than Banks? Banks designed and built the 6.6L Sidewinder S-10, which is the quickest and fastest ever diesel-powered drag racing pickup truck.  It holds the national quarter-mile record at 7.77 seconds at 180 mph! And it did it without the billowing black smoke common with improperly tuned diesels. Moral to the story? No one knows more about boosting Duramax performance safely and reliably than Banks.

System Includes:


Techni-Cooler® Intercooler System

  • Two large, sturdy all-aluminum end tanks
  • Thicker core with 25% more flow volume
  • Reduces boost pressure loss
  • Dramatically increases air density for high continuous power



Banks Ram-Air® Intake System

  • Outflows stock & competitors up to 57%
  • Largest filter area for superior high-flow filtration & fewer filter cleanings
  • Exclusive 5" bellows accommodates engine movement & prevents component damage
  • Cooler temps; more power & MPG, plus a cleaner-running engine



Six-Gun® Diesel Tuner & Banks iQ® 2.0

  • Destroys the competition, not your vehicle
  • 6 change-on-the-fly power levels
  • 0-60 mph 22% quicker!
  • Banks’ CleanTune® Technology out-powers dirty, smoky tunes!
  • ActiveSafety® protects engine & powertrain
  • Banks iQ man-machine interface controls Six-Gun, plus real PC computer functionality



Monster® Diesel Duals Exhaust

  • 4” stainless DPF-back system (3½” tailpipes for effortless fit)
  • Cool Cuff® design reduces tailpipe temps
  • Virtually eliminates backpressure
  • Duals system safely clears spare tire
  • Huge polished tips
  • Dual exhaust not available for dualies

Or choose the single exhaust



Monster® Exhaust

  • 4” stainless DPF-back system
  • Cool Cuff® design reduces tailpipe temps
  • Virtually eliminates backpressure
  • Huge polished tip

Or choose the dual exhaust


ApplicationYear RangePart #
Big Hoss Bundle, single exhaust, CHROME tip
Emissions compliant: CARB E.O. D-161-81 (RA), D-161-90 (TC), D-161-92 (OM)
2007-10 47798
Big Hoss Bundle, single exhaust, BLACK tip
Emissions compliant: CARB E.O. D-161-81 (RA), D-161-90 (TC), D-161-92 (OM)
2007-10 47798-B
Big Hoss Bundle, dual exhaust, CHROME tips
Emissions compliant: CARB E.O. D-161-81 (RA), D-161-90 (TC), D-161-92 (OM)
2007-10 47799
Big Hoss Bundle, dual exhaust, BLACK tips
Emissions compliant: CARB E.O. D-161-81 (RA), D-161-90 (TC), D-161-92 (OM)
2007-10 47799-B

Clean Diesel Power for a Duramax LMM


Banks shows us the path to more power without choking the environment.

by Harley Camilleri

We have seen plenty of diesel engine power adders that make large power numbers and provide truck owners with the ability to easily destroy drivetrain parts. With black soot pumping from an open 5-inch sewer pipe and a set of beefy tires up in smoke, the scene certainly lends itself to some manly entertainment. Unfortunately, that much available power usually causes an assortment or problems, including over fueling the engine and damaging the injectors, torching the turbo wth absurd EGTs, and breaking transmission internals incapable of handling the added stress of larger tires and nearly double factory power output. Towing becomes difficult too, since the torque becomes less linear as the tune ramps up towards redline. Add in the mandated emissions testing some states are adopting, and you have yourself a laundry list of unnecessary headaches. Click below to read the whole story and see how Banks Power avoids all of these problems—yet still delivers put-you-back-in-your seat power...

Truckin magazine reivews Banks Big Hoss Bundle

Be sure to check out the Truckin' website!

Diesel Particulate Filters: CoolCuff

Gale Banks talks with Sam Memmolo from Two Guys Garage about how Banks' new CoolCuff design adds performance and safety to DPF systems.

exhaust: LMM

Banks Monster exhaust on a Duramax LMM truck. Single exhaust.

More Power, Less Smoke

TruckU: Upgrading the towing performance of an 08’ Chevy Duramax safely and explaining the new technology that goes into a Diesel Particulate Filter. Banks tuner, cold-air intake and intercooler are featured.

Big Hoss Bundle installation

Maximum airflow and ultimate power. Watch and learn the importance of airflow, how to increase your power output safely, why you need to upgrade your intercooler, cold air intake, exhaust... (it's a Duramax here; components and features vary by truck)<

Need pricing? Call now 800-601-8072 Monday through Friday 7am to 5pm Pacific Time

Banks News - Sign up today!

Be in the know with
Gale's Insider News and Offers.

Need pricing? Call now 800-601-8072 Monday through Friday 7am to 5pm Pacific Time

Featured Video:

Banks Big Hoss Bundle Overview

Free Test Report


“Looking to take your turbodiesel’s performance to the next level? Look no further than Gale Banks Engineering. ”
AutoWeek (May '05)