Before Purchasing:
It is important you pick the correct system for your Bronco. We have a lot of information here at your disposal to ensure you do this right and do this once. If you choose parts that do not work with your Bronco or application it could be costly on your end For you to correct that. Please read below to understand our hydroboost return & exchange policy.
Ours And our manufacturers' Policies. We cannot accept or allow the return of any hydroboost parts that are removed from the sealed black box or Wilwood box they come in. These parts are extremely sensitive in function and in form. If parts are damaged or defective due to no action of your own, we will do everything we can to repair or replace them. If you choose to return parts or components that do not meet these explicit requirements, understand that we will likely refuse to accept the return. You will be responsible for return shipping charges if your return is refused.
Contents
WHAT IS INCLUDED?
Check out our UNBOX VIDEO of our classic hydroboost system to get an idea of what's included. Our premium hydroboost includes a majority of the parts in the classic hydroboost, but has some great new additions as follows:
- Genuine Hydratech-spec’d Bosch Hydroboost unit - every unit goes through a stringent QC process!
- 2 high-pressure stainless steel braided Aeroquip lines
- 1 Extreme Duty Parker hybrid rubber return line
- Eaton fittings
- Hose clamps
- Semi-Universal power steering pump fitting adapter kit
- New brake pedal rod and adapter
- Two different Style Master Cylinder Options
- Classic SystemÂ
- Includes a GM Style Cast aluminum Master CylinderÂ
- Uses the factory proportioning valve on the frame rail
- Optional Stainless 12 gauge Facia plate for long-lasting rust-free good looks and doubles as a template for the MOD system to modify the firewall where needed
- Wilwood Premium System
- Compact bullet Wilwood Black Billet Flat Top Aluminum Master Cylinder
- Wilwood adjustable proportioning valve with Master Cylinder bracket and hard-line kit
- Includes a Stainless 12 gauge Facia plate for long-lasting rust-free good looks and doubles as a template for the MOD system to modify the firewall where needed.
- Classic SystemÂ
- All American Made DOT certified Stainless Brake Hoses, brackets, and line clamps for a painless trouble-free install
Check out the install videos, Part 1| Part 2
James Duff offers the best-performing brake systems in the industry. We don't just say that we can PROVEÂ it.
We care about supplying the best parts for your Bronco. But, we care just as much about your safety and the safety of others around you while you're enjoying your Bronco. That is why we spent the time and tested the products available. We will only sell what WE have tested and determined to provide the best, controlled stopping power.
WHAT ADD-ONS/ UPGRADES SHOULD I CONSIDER?
Our no firewall modification hydroboost kit is our most popular upgrade and can be selected above in our drop-down options. This system requires zero modifications to the firewall of your 66-77 Bronco. *EXCEPTIONS AND EXCLUSIONS APPLY
- Need to upgrade your power steering pump or entire power steering system? Click here.
- Don't have front disc brakes yet? Check out these options that pair nicely with hydroboost 3730, 3777, 3778
- Looking for a rear disc brake kit? We've got premium and budget-friendly options here: BRBÂ 3716,17,18 & 19
Information
Introducing the next level of braking performance: The James Duff/Hydratech Hydroboost Kit! With its primary components built by the best in the industry including Hydratech Braking Systems.
We offer this system in two different versions to fit your Broncos application.
Classic Hydroboost
The James Duff/Hydratech Classic Hydroboost Kit! With its primary components built by the best in the industry, Hydratech Braking Systems. Why classic? This system includes a GM-style cast aluminum master cylinder with a chrome lid. It uses your factory proportioning valve that's located on the frame. You can opt to include the stainless steel facia plate for this system to finish off the looks.
Wilwood Premium Hydroboost
This system includes a blacked-out Wilwood billet aluminum master cylinder with a flat top lid, Wilwood adjustable proportioning valve that direct mounts to the driver side of the master cylinder with a line kit, and a stainless fascia plate that not only looks great but also is a template for modifying your firewall.Â
Need the BEST stopping power? Did you upgrade your tire size and now your brakes don't perform as well as they used to? Does your new engine have a big, vacuum-robbing cam that makes it feel like you're back to manual brakes?
Our hydroboost kit, when combined with our supplied master cylinder, makes for a smooth install and your Bronco will stop on a dime.
Features
Why Duff's?
What sets James Duff apart from the rest? Let's take a competitor's product that "appears" the same as ours. Let's dive deeper into the James Duff/Hydratech Hydroboost kit and review what sets it apart:
Genuine Hydratech Hydroboost firewall mounting plates are machined out of a solid chunk of billet aluminum. They are not cast aluminum (with "machining") like other systems currently sold. Why does this matter? Cast aluminum, although great for making items such as custom wheels, is prone to cracking when subjected. When you step on your brake pedal, you're exerting leveraged force onto those mounting plates. If they crack, performance could be compromised. If they break, your Bronco's brakes could fail. This would be a serious problem in a panic situation.
With the most common engine and body lift configurations, there is no modification necessary to the firewall. That's right, no template to make and no hole to cut! Ours is the first kit available from a Bronco vendor that requires absolutely no firewall modification ( for the majority of installations)! This is an additional benefit to the DUFF/Hydratech kit because that mod is not easy for everyone to do (and easy for some to do wrong).
The brand new, Bosch Hydroboost unit is thoroughly inspected, then modified specifically for the mounting angle needed in a Bronco. Next, it is pressure-tested, cleaned, and then painted with two-stage automotive grade paint. Other vendors offer new units too, but do they ensure they are perfect before you get them? It's one thing for it to be new, it's another for it to be RIGHT!
Only Aeroquip and Eaton hoses and fittings are used. Why does this matter? Import lines and fittings are not subjected to the same testing processes as our quality components. This can lead to leaks in a high-pressure, heat, and vibration-prone environment like that found under the hood of your Bronco. It's not a matter of IF there will be an issue, it's a matter of WHEN. This is another area where other Bronco vendors cut corners to reduce their costs. Not only is this cost "savings" not passed on to you, but the choice to use the inferior components also is actually not allowed by Hydratech. The primary reason is not just to use a more expensive component. Rather, it is because they KNOW that Aeroquip and Eaton products exceed the most exacting quality standards. In fact, Hydratech has the same testing equipment at its own facility as do Aeroquip and Eaton. Just another step in ensuring that their product is the best one out there.
Always sold with the correct master cylinder. Why is this so important? Did you know that if you use the wrong master cylinder when you install your system, you run the risk of destroying the hydroboost unit? With James Duff looking out for you, there is no guessing and no risk of the wrong choice destroying your brand new Hydroboost unit. We have taken the extra time, and expense, to "match" you and your Hydroboost system with the best master cylinder for your needs. In the end, not only can you proceed without fear, but you can rest assured that you will "Whoa!" your Bronco in the shortest distance, with the most control, possible.
FAQ
Q. Why Hydroboost?
A. Anytime you add lift+larger tires, run an engine with a low vacuum or want the best response out of your braking system, you will benefit from hydroboost.
Q. Why choose Duff's?
A. All American is assembled out of the best quality parts that are proven by Duff's to work the best. Customer service and tech support are second to none.
Q. Can I damage the hydroboost unit by installing it improperly?
A. YES! If you allow the push rod inside the hydroboost unit to move forward or back before 100% installed with the correct master cylinder bolted in place you will destroy the unit and void its warranty.
Q. Can I use hydroboost with front axle drums?
A. NO - we highly recommend not combining hydroboost with front drums for safety reasons.
Q. What steering pumps and boxes does this kit work with?
A. Bronco, Explorer and Saginaw pumps as well as stock and aftermarket power steering gearboxes. Keep in mind, that if any of your components are old, tired, and/or worn out, this will be a good time to freshen them up or replace them.
Q. Do I need to use an adjustable proportioning valve with hydroboost?
A. It varies depending on how your Bronco is built.Â
Q. What is required to install the adjustable proportioning valve to the classic hydroboost system?
A.The only requirement you will be responsible for is plumbing in the APV (adjustable proportioning valve) if you decide to add one. This APV that is offered as an add-on to this kit will require the rear OEM brake line removed from the back of the OEM or OEM style proportioning valve and then cut and re-flared. Cut 3-4 inches off the end of the rear brake line, add a 3/8x24 inverted flare tube nut & re-flare the end. Do the same to the 3-4" short piece you cut off as well. Then, thread the 3-4" long piece back into the OEM proportioning valve and the APV, then thread the rear brake line into the other side of the APV. Make sure the APV is plumbed correctly. If you want to mount it, you will need to make a mounting bracket for it or you can plumb it a different way and mount the APV directly to the frame.
Q. What type of fluid should I use with my power steering system? I have been told the automatic transmission fluid (ATF) can be used.
A. OEM fluids from the dealer are the absolute best. You can use any type of commercially available power steering fluid that meets the specifications of your steering pump and gearbox. You should not use any type of ATF as it may foam excessively when it gets warm. Please also be very careful not to accidentally use the wrong fluid in either the brake or the power steering systems as substantial systems damages will occur!
Q. Can I mix steering fluid?
A. We don't recommend this but if you drain the system from the lowest point and add new fluid it won't hurt if a little old mixes with new.
Q. What all do I need to do for the installation?
A. Check out this video here
Compatibility
Early BroncoÂ
- 1966
- 1967
- 1968
- 1969
- 1970
- 1971
- 1972
- 1973
- 1974
- 1975
- 1976
- 1977
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