Contents
Includes:
- 2.5" Progressive Coil Springs
- 2.5" 11-Pack Progressive Leaf SpringsÂ
- HD U-Bolts with Hardware
- HD U-Bolt Plates
- Hassle-Free Track Bar
- 7° C-Bushings
- Radius Arm Bushings
- Upper Coil Spring Retainers
- 4 Shocks - Choose MS2020's or Classic 70/30's
Options:
- Add New Leaf Spring Shackles
- Add New Spring eye and Shackle Hardware
- Add Heavy Duty Lower Coil Spring Retainers or Dual Sport HD Lower Coil Retainers
- Purchase stock pitman arm, if your Bronco currently has a drop pitman arm
Upgrades you should consider:
- 1" Body Lift
- Dual Sport Heim Steering System
- Upgrade shocks to MS2020's
- T-Rex Arms
- Hellwig Sway Bars
- Save $500-$800 in shipping and system costs by moving straight to the Duck Tuff Performance Package
Information
James Duff is proud to offer you the most versatile budget-friendly suspension system you can install on your Early Bronco. Whether you want to cruise to the car shows or take your friends and family off-road this lift system is the best starting point.
Whether your Bronco is cut or uncut has 31's or 35's this lift can do it all. This system is so versatile because it not only delivers the stance and ride you're looking for but it's also the best starting point for the most premium performance package offered by James Duff.
We're keeping it simple but doing it right - No blocks or add-a-leafs here! Comes with new progressive coil and leaf springs, our Hassle-Free Adjustable Track Bar, 7° C & strut arm bushings, new heavy duty u-bolts+ u bolt hardware, heavy duty u-bolt plates. 2 options for shocks - Our tried and true classic 70/30 or our performance-minded MS2020.
This kit is designed to use the single stock shock mounts all around. No welding, no drop pitman arm, or drop trac bar is required. Reuse your stock shackles with this kit.
Note: If you have a '66 year model you will need to upgrade the rear shock mount to our classic shock mounts if your Bronco has not already been upgraded.
This system is a great starting point to the Duck Tuff Performance package shown below.
Features
Features:
- Made in the USA
- Includes Hassle-Free Heavy Duty Adjustable Trac bar
- Deaver Leaf Springs
- Progressive Coil Springs
- 7° C-Bushings
FAQ
Q: What size tire can I fit with this system?Â
A: With 0" body lift - Uncut 31x9.50" Flares 33x12.50"
   With 1" body lift - Uncut 33x9.50" Flares 35x12.50"
Q: How do I know if I need heavy or medium-duty leaf springs?
A: Check out our FAQ page to learn more about which leaf springs are right for you.
Q: Will I need sway bars?
A: You will notice your Bronco’s body roll increase in the turns. This is normal anytime you increase the suspension ride height. It is not unsafe at low speeds however if you want more turning control while driving and at speed, we do recommend you start with a front sway bar.
Q: Do I need frame-to-axle extended brake lines with this kit? # 3931
A: Typically you do not but if you add T rex arms then use the bronco off-road you may want to consider adding them.  If you still have the original factory rubber lines, for yours and others' safety, please replace them immediately. Â
Q: Do I need extended parking brake cables? # 3756
A: No but again, if your original ones are needing to be replaced anyways or you plan to use the Bronco offroad we recommend you replace them with new extended ones
Q: Do I need new driveshafts?
A: We always tell our customers that every Bronco is different. Some need them, others do not. If you feel your driveshafts may be too short or need to be replaced contact us. Looking to buy? Our front driveshaft is here, and our rear driveshaft is here.
Q: Should I replace my steering while I am installing my new lift system?
A: It is strongly recommended. Check out our heim steer systems or our wildly popular bumpsteer eliminator kit.
Q: Do I need pinion shims with this lift?
A: Yes, it is likely. We offer them while configuring this system. Some Broncos need 4 deg shims and others need 6. Or you can replace your rear axle spring perches with our heavy-duty weld on perches that offer the perfect pinion angle and help reduce axle wrap and allow you to position the axle exactly where you want it.Â
Q: Do I need to move my rear axle back when I lift my Bronco?
A: Bronco’s with rear cut fenders don’t typically need this but if you are uncut you might. We offer 2 options; First, our LUBR alignment plates which will allow you to move the axle back up to 1.25". Second, you can check out our spring perches here that allow you to move your axle back as well and give you an option to lift it up another inch if needed.
Check out our other FAQs here.
Compatibility
This system is compatible with '67-77 Broncos. If you have a '66 Bronco we highly recommend inspecting your rear shock mounts as '66 Broncos came equipped with stud-eye rear shocks
Instructions
Blaise (verified owner) –
The team at James Duff worked with me to select the correct suspension components. They were super responsive when I had questions during installation. My 72 never had such a great ride in the 40 years I have owned it. Thanks again to the Duff team.