Description

Installation Note:

Before Purchasing:

•In order to place your order, you must choose a Knuckle Mounting kit. This new Heim steer system no longer comes with the expensive knuckle mounting bolts. This saves you money towards purchasing one of the other NO DRILL knuckle mounting options. NOTE: If you are mounting your new heim steer above the knuckle (TRO) you will need to drill out your knuckles

•This system is compatible with ’66-’77 Broncos with a factory-style frame, steering gearbox & front axle. It is up to the customer to verify they have these components before purchasing this system. If they do not have all 3 of these, they will need to measure here and possibly buy a custom setup.

•The new Dual sport heim steer (#5641) has recently been modified to accept a steering stabilizer. If you bought a 5641 before February of ’22 it will be listed on your shipping invoice as 5641B and WILL NOT be able to mount a steering stabilizer to it using the mount kit we offer.

All Dual Sport Heim Steer Systems bought after February of ’22 will be listed as a 5641C on the shipping invoice and WILL be able to mount our steering stabilizer kit to it.

If you have a 5641B and would like to mount a steering stabilizer to it, please contact our tech department.

Contents

Includes:

• 5641 Dual Sport Heim Steer System
  • Tie Rod
  • Drag Link
  • Driver and Passenger Side Heim Joints
  • Tapered Heim Joint for Pitman Arm

Options:

• Installation Hardware Kit
  • 3/4″ Bolts (564x) – These require drilling of your knuckles and must be used if you are installing this system tie rod over (TRO).
  • Tapered Stud Kit – Require no drilling of knuckles if you are installing this system tie rod under (TRU)
    • GM 1-Ton and F-150 Knuckles (5647)
    • Early Bronco Knuckles (5648)
• Weld-On C-Cap Mounts
  • Use these if you plan to mount your steering tie rod over (TRO) and are installing shocks forward of the coil spring.
• Heim Steer Drill Bit Kit – This high-quality drill bit will allow you to drill out your knuckles to 3/4″ if required by your hardware choice.

Information

Replace your weak, rock-rashed stock or poorly designed aftermarket steering with one of our TUFF new Dual Sport heim joint steering systems!

We’ve taken our tried and true heim joint steering systems up another level. This system now has the ability to fine tune and adjust your alignment specs without having to take anything apart.

We use a tapered heim stud at the pitman arm that allows more articulation than a standard heim plus it completely eliminates the need to drill out your pitman arm! NOT recommended for use at the knuckle & comes standard now with all our heim steer systems. The tapered heim stud comes with a solid tapered sleeve pre-installed. This sleeve can easily be removed if you are using a pitman arm for a ’66, ’76, or ’77 Bronco.

(For street-driven vehicles, check your local regulations before ordering. Some states will not pass inspection with heim joints in the steering system.) Please note if you have shocks mounted to your C cap and would like to install this system ABOVE the knuckle you will likely need to purchase our weld on c-cap mounts. Steering stabilizer setups will need modification to be reinstalled.

Features

Features:

• Made in the USA
• 1.25″ DOM tubing with over a 1/4″ thick wall! 0.2815″ to be exact.
• Threaded tube (no weld-in insert) for maximum strength and clearance.
• Drag link attaches to the tie rod in the factory location via a welded-on “saddle” maintaining factory geometry. NO BUMP STEER!
• Our design greatly reduces applied torque and stress on the passenger side steering knuckle.
• Included are high-strength, Teflon-lined, 3/4″ rod ends to prevent binding and allow full articulation of the joint.
• Unless you buy our heim stud kit (5647/5648), it will require you to drill out your stock knuckles to 3/4″ (If you have James Duff steering knuckles, they are already machined to 3/4″). Buy our drill kit here.
• Pitman arm uses our specialized tapered heim stud (more info below)- NO DRILLING OF THE PITMAN ARM REQUIRED – Drop pitman arm available here, OE replacement pitman arm here.
• The system can be installed under or over the knuckle in your driveway or garage – If you install over the knuckle you will need to drill out your knuckles and purchase our 564X Knuckle install kit. A 3/4 drill with drilling oil is also available here.
• Purchase our weld on c-cap mount kit for applications running a front-mounted shock with the tie rod mounted ABOVE the knuckle
• Complete hardware kit with all-metal unitorque nuts and cotter pins to secure everything in place included.
• Comes black powder coated with detailed instructions

FAQ

Q: Will this work on my Bronco?
A: This system is designed to work with the 1st gen 66-77 Bronco with factory style frame, Front axle, and gear box. Not sure what yours is equipped with? Go here.

Q: If I install this heim steer system over the knuckle do I need to drill out my knuckles?
A:Yes, drilling out your knuckles is required. Use hardware kit (564x).

Q: Is there any free play in this system once installed?
A: No, our knuckle install kits come with the correct spacers to be installed between the heim and the knuckle to prevent free play.

Q: Will I need any special tools?
A: Yes, you will need two – 1 1/8″ open-end wrenches to tighten down the jam nuts in the heim steer system. More tools and skills will be required if you drill out your knuckles

Q: Will I need Loctite?
A: Yes. We provide red Loctite in the main hardware kit. You are required to use it AFTER you get an alignment. Be sure to get an alignment before you daily drive, road trip, or off-road the Bronco.

Q: What skill set and special tools are required to install these parts?
A: Drilling out your knuckles is required if using hardware kit (564x) Please be sure to have a qualified mechanic do the work to ensure you and others safety is not jeopardized Check out the install videos below from Bronco Garage to learn more about the install and what is required to do it.

Q: Will I need to get an alignment after installing these parts?
A: Yes – This system is hassle-free when it comes to alignment! Just loosen the jam nuts at the pitman arm and driver side steering knuckle and move the adjustment bar to center your steering wheel and toe.

Q: Are heim joints used in this steering system?
A: Yes

Q: What is a heim joint?
A: Click here to learn more

Q: If I need to buy a custom heim steer will it be just like this one?
A: No, our custom heim steer is not the same. Go here to see the photos and specs to compare.

Q: Are heim joints legal for on-road use?
A: Yes, but a few states have laws specifically about vehicle steering systems. Be sure to check with your local DOT if you’re not sure.

Check out our other FAQs here.

Compatibility

This system is compatible with ’66-77 Broncos that have a factory-style frame, factory steering box, and OEM style front axle.

Instructions

Download instructions here…