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USD 496.74 496.74 659.99
Part #:

Banks Power SpeedBrake All-Electronic Braking System

2004-2010 Chevy 6.6L Duramax LLY/LBZ/LMM
Part #:
★★★★★ ★★★★★ 3 Reviews
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Banks SpeedBrake is a revolutionary, patented all-electronic braking system with downhill speed regulating capability, user-adjustable setpoint speeds (25-75 mph) & built-in safety. It takes exhaust braking to a whole new level by combining intelligent manipulation of the variable geometry turbo's turbine vanes with specific control of gear selection and torque converter clutch application when engine braking is desired. SpeedBrake has various operating modes and settings to optimize braking function for individual preferences and conditions.

Features & Benefits:
More effective braking than is possible with a simple valve assembly
System Status Indicator with on-screen alerts (excessive coolant or trans temps, for example)
Easy, clean install; all-electronic design requires only a few simple underhood connections; no modifications to the exhaust system are needed
In testing, dramatically outperformed all competitive products in basic braking function (and nobody but Banks has anything like a Speed Control Mode!)
Easy touch-screen control - Displays vehicle speed, current braking effort (relating to vane position), trans temp, engine coolant temp and much more
OBDII scan tool capability: reads/interprets/clears codes
System Status Indicator with on-screen alerts (excessive coolant or trans temps, for example)
Operating Modes:
ON: Maximum braking; High, Med and Low strength settings 
SPEED CONTROL: Maintains pre-selected target speed
SpeedBrake requires use of Banks Power iQ or PDA.
Grade percentage parameter shown on monitor is no longer available. 

Product Options

55445 06-07 Chevy LBZ w/o iQ-Dashboard
55446 07-10 Chevy LMM w/o iQ-Dashboard
55440 04-05 Chevy LLY w/o iQ-Dashboard


  • Manufacturer Name Banks Power
  • Shipping Weight 4.00 lb.
  • Shipping Length 5 in.
  • Shipping Width 10 in.
  • Shipping Height 12 in.
  • Fuel Type Diesel
  • Prop 65 WARNING: Cancer & Reproductive Harm -


★★★★★ ★★★★★
4.7/5 Stars out of 3 Reviews
Beekeeper retired IA teacher
(Porterville CA) | November 29th, 2010
This braking system does what they advertise it to do. I used it for the first time 11/23/10 on the Tehachipi pass to Bakersfield. I set my cruise and the speed brake at 57 and it never broke the pace. I use the Low setting for everyday country and city driving and I don't have to use the brakes except for the 15 mph cut out speed. In Feb. I will give it the ultimate test when I go down the four mile 9% grade out of Death Valley. I am anxious for Banks to complete the IQ with a navigation and media access. It is frustrating having to use two screens to view them at this time. 2008 GMC LMM towing a Montana 2955 fifth wheel.
06 LBZ 2500HD Banks Speed Brake
(Rancho Cucamonga, California) | March 27th, 2012
Stats:2006 LBZ 2500HD Duramax stock, Coast Highway 101 into Ventura, 7% grade, Trailer - Coachman Brookstone 38 1/2 ft, Truck and Trailer - 22000 lbs, Speedbrake w/IQ set to 55, Transmission set to 3rd gear by Speedbrake, engine rpm @ 3300, speed held gross to 56 MPH, Speedbrake % varied from 75-92%.
Works as advertised
(Hamilton, Montana) | January 2nd, 2015
2005 Chevy Silverado duramax pulling 38' 5erI would not want to be without this, it's like cruise control for those long steep downhill grades.Also a great thing on manual mode when pulling on the level.The local Chevy dealer did the install, which only took a couple of hours including testing (also included install of the Banks tuner).

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Questions and Answers

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Most Popular Questions

My truck is equiped with tow haul but not an exhaust brake, is an exhaust brake needed or does it work with or w/o? 2008 GMC 3500 Duramax, no engine brake but has tow haul. Was looking at installing an exhaust brake, wonder if an exhaust brake is needed with this item or not and if ok with an exhaust brake. Pros and cons with exhaust brake and pros n cons of with out exhaust brake?
View Staff Answer 

The BANKS POWER SPEEDBRAKE ALL-ELECTRONIC BRAKING SYSTEM will utilize the factory variable geometry turbocharger to function as an exhaust brake.

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