BRBN Bronco Billet Upper Control Arms- Specs + Options

[BRBN_OFFROAD]

Sharing some details on our Bronco arms below:

Link to website for additional details.

Fitment: 2021+ Ford Bronco


Overview
The BRBN Billet Front Upper Adjustable Control Arm is engineered from 6061-T6 billet aluminum to deliver exceptional strength, rigidity, and adjustability compared to OEM or aftermarket tubular steel arms. Built for performance (and some style points), these arms are available in a satin BRBN anodized green or black finish — designed to look as good as they perform.


Perfect for Broncos with lifted or modified suspension, this component corrects caster and provides adjustable camber to dial in proper alignment after upgrades, ensuring precise handling and extended tire life.


Features & Specifications

• Material: 6061-T6 billet aluminum with anodized green or black finish
• Adjustability: Sealed, adjustable rod ends & ball-joint to keep the unwanted moisture and debris out, and grease in
• Performance: Improved clearance and range of motion
• Function: Corrects caster and provides adjustable camber
• Construction: Strong, lightweight, and rigid design
• Warranty: Lifetime warranty
• Rebuildable/can be serviced
• Hardware: Top-grade hardware that won't rust

We will have our rear adjustable (steel) arm options available later this year as well, I will post some updates on a separate thread in the near future.

Thanks for looking!

- Andrew

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[Peitnahtan]

Are you guys doing sponsorship or discount for reviews? Looking to upgrade suspension soon.

 

[BRBN_OFFROAD]

DM Sent

 

[Hummell]

Man, all of your components look gorgeous.

 

[BRBN_OFFROAD]

Man, all of your components look gorgeous.

Appreciate that Adam!

 

[KABQ]

Would you pronounce that "bourbon?" Or "brybin?" Or just say the letters?

 

[BRBN_OFFROAD]

Would you pronounce that "bourbon?" Or "brybin?" Or just say the letters?

Some pronounce it B.R.B.N., while others "bourbon"

 

[LOSTXGOLD]

Dam, these look nice!

Let me know if y'all need hep with the photography,

 

[BRBN_OFFROAD]

Thanks Teo!

Dam, these look nice!

Let me know if y'all need hep with the photography,

 

[GreyZ]

Do you have more info on the castor correction. From what to what at different lift heights? What lift height and tire size are these optimized for?

 

[BRBN_OFFROAD]

These were designed to be appropriate for 1.5-4" lift range

 

[87-Z28]

Do you have more info on the castor correction. From what to what at different lift heights? What lift height and tire size are these optimized for?

It would be nice to know what lift height UCAs are optimized for. From response I suppose you can only assume 3” at wheel.

Attached is a plot of upper and lower ball joint motion in absolute coordinates. X axis is for-aft direction and Z is up-down. X axis motion dominates caster. Lower ball changes little throughout suspension cycle but upper ball moves roughly 1” in X direction for every 3” of shock travel.

This was plotted for a specific coilover length. Can’t remember which one. I am curious myself to see how caster changes wrt the 4WP coilovers we have. I will make an exact plot for those when I have a minute.

Rough numbers though. For a 3” lift at wheel (1.6 MR) you get about 1.9” at shock. So roughly 0.6” correction of upper ball would optimize a 3” lift at wheel. I will make more exact plots.

@Snacktime posted a pic of the upper ball location change wrt OEM (X dir) for the 4WP UCA.

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