Do You Need Upper Control Arms for a Lifted Ford Bronco? UCA Guide for 2021-2026 Broncos
how much lift you add and which suspension system you're using, aftermarket upper control arms can help restore alignment geometry, provide additional joint articulation, improve component clearance, and allow the suspension to use additional travel without binding.
Let's look at what actually changes when you lift a Bronco and when upgrading the upper control arms makes sense.
How the Ford Bronco Front Suspension Works
The 2021-2026 Ford Bronco uses an independent front suspension with upper and lower control arms and coilover-style spring and shock assemblies.
This design gives the Bronco excellent ride quality, steering control, and off-road capability, but the suspension geometry was engineered around a specific factory ride height.
When the Bronco is lifted, the suspension's normal resting position changes.
The higher the vehicle is raised, the farther the control arms move away from their original factory position.
That can affect several things, including:
- Caster
- Camber
- Alignment adjustment range
- Upper ball joint operating angle
- Suspension articulation
- Available wheel travel
- Upper control arm clearance
This is where aftermarket upper control arms can become valuable.
What Happens to Suspension Geometry When You Lift a Bronco?
Installing lift springs or adjustable coilovers increases the distance between the Bronco's chassis and the ground.
The suspension now sits farther down in its available travel while the vehicle is at normal ride height.
That change can make achieving the desired alignment more difficult, particularly as lift height increases.
Caster
Caster plays an important role in steering stability and the tendency of the steering wheel to return toward center.
Aftermarket upper control arms may incorporate additional caster or provide adjustable mounting points that allow an alignment technician to compensate for the geometry changes created by a suspension lift.
Camber
Camber describes the inward or outward angle of the tire when viewed from the front of the vehicle.
Too much positive or negative camber can contribute to uneven tire wear and undesirable handling.
Some aftermarket Bronco upper control arms provide additional camber adjustment beyond what is available with the factory suspension.
Joint Angle & Articulation
Alignment isn't the only consideration.
As suspension travel increases, the upper control arm's outer joint must move through a greater range of motion.
A high-articulation aftermarket ball joint, uniball, or similar suspension joint can allow greater movement before the joint reaches its mechanical limit.
This becomes particularly important with high-performance coilovers designed to provide more suspension travel than the factory setup.
Do You Need Upper Control Arms With a 1-2 Inch Bronco Lift?
For a mild lift, aftermarket upper control arms are not automatically required.
Whether you need them depends on:
- The exact suspension system
- Actual front lift height
- Your Bronco's factory suspension package
- Available alignment range
- How the vehicle is used
- How much additional suspension travel the new system provides
A Bronco that receives a modest lift and can still be properly aligned may operate perfectly well with the factory upper control arms.
That doesn't mean aftermarket UCAs provide no benefit.
An upgraded UCA can still offer additional caster, improved articulation, increased strength, or additional alignment capability.
But there's an important distinction between “beneficial” and “required.”
For a mild lift, I wouldn't tell every Bronco owner that upper control arms are mandatory.
What About a 2-3 Inch Bronco Lift?
This is where aftermarket upper control arms become much more worth considering.
As front ride height approaches the upper end of the 2-3 inch range, suspension geometry moves farther from the factory design.
Depending on the suspension system, the factory UCA may begin to limit alignment or available suspension travel.
For example, ICON Vehicle Dynamics specifically notes that the factory Bronco upper control arms may not align properly beyond certain lift heights with some of its coilover systems and recommends aftermarket UCAs in those applications.
This is why you should always check the recommendations of the manufacturer that produced your lift springs or coilovers rather than relying on a universal rule such as:
“Anything over 2 inches needs upper control arms.”
The suspension system itself matters.
What About Eibach Lift Springs on a Bronco?
The Eibach Pro-Lift-Kit E30-35-056-01-22 is a good example of why lift height should be considered by application rather than simply looking at the product name.
Eibach lists different lift amounts depending on the Bronco's factory HOSS suspension.
For a HOSS 2.0 Sasquatch Bronco, Eibach lists approximately:
+2.3 inches front / +1.6 inches rear
For a HOSS 3.0 Bronco, Eibach lists approximately:
+1.9 inches front / +1.3 inches rear
Actual ride height can vary depending on vehicle configuration and accessory weight.
At these lift heights, an aftermarket upper control arm isn't necessarily mandatory simply because Eibach springs were installed. However, upgrading the UCAs can provide additional alignment capability, caster correction, articulation, and room for future suspension upgrades.
If you're building the Bronco in stages, installing UCAs at the same time as the lift can also prevent paying for another front-end disassembly and alignment later.
Signs Your Lifted Bronco May Benefit From Aftermarket UCAs
There are several reasons you might consider upgrading the factory upper control arms.
Your Bronco Can't Be Properly Aligned
This is one of the clearest indicators.
If the alignment technician cannot achieve acceptable caster or camber after the lift, an aftermarket UCA designed to correct or adjust suspension geometry may solve the problem.
You're Installing High-Travel Coilovers
Some aftermarket coilovers provide more wheel travel than the factory suspension.
In this situation, the factory upper ball joint or another aftermarket UCA may become the limiting factor.
The suspension should always be cycled through its complete range of motion to verify that the upper joint does not bind.
You Want More Caster
Some aftermarket Bronco UCAs incorporate additional caster specifically for lifted applications.
Additional available caster adjustment can help an alignment technician achieve the desired geometry after increasing ride height.
You Want More Suspension Articulation
High-articulation joints such as ICON's Delta Joint PRO or an appropriately designed uniball can provide substantially more movement than a conventional joint.
That can be valuable on Broncos that regularly see significant suspension articulation off-road.
You're Building for Larger Tires and More Suspension Travel
Installing 35- or 37-inch tires doesn't automatically mean you need upper control arms.
But larger tires are frequently part of a larger suspension build involving additional ride height, aftermarket wheels, increased wheel travel, and more aggressive off-road use.
At that point, the UCA becomes part of the complete suspension system rather than simply an alignment component.
Tubular vs Billet Bronco Upper Control Arms
Once you decide to upgrade, another question appears:
Should you buy tubular or billet upper control arms?
Both can work extremely well.
The bigger differences are usually construction, adjustment method, joint design, wheel clearance, serviceability, and price.
Here are three different approaches available for the 2021-2026 Ford Bronco.
ICON 48400DJ Tubular Upper Control Arms With Delta Joint PRO
The ICON 48400DJ uses heavy-wall 1026 DOM steel tubing and ICON's Delta Joint PRO.
Additional caster is built into the control arms to help improve alignment geometry on lifted Broncos.
The Delta Joint PRO provides up to 90 degrees of total articulation and is fully serviceable and rebuildable.
ICON also uses serviceable dual-stage bushings at the frame pivots.
One particularly important advantage of the 48400DJ is factory wheel and tire compatibility.
This makes the tubular ICON UCA an attractive choice for Bronco owners who want improved geometry and articulation without necessarily changing their factory wheels.
Good choice for: Bronco owners looking for a strong, serviceable UCA with additional caster and excellent articulation while retaining compatibility with factory wheels.
ICON 48500DJ Billet Upper Control Arms With Delta Joint PRO
The ICON 48500DJ is ICON's premium billet option.
Instead of tubular steel, the arms are CNC machined from 6061 billet aluminum using a hybrid H-beam design.
They also use the Delta Joint PRO but replace conventional inner pivot bushings with FK 3/4-inch rod ends and ICON double-adjuster sleeves.
The major advantage is on-vehicle caster and camber adjustment.
That provides considerably more alignment flexibility for highly modified suspension systems.
There is one very important fitment consideration:
ICON states that factory wheels and tires are not compatible with the 48500DJ.
Appropriately specified aftermarket wheels are required to provide the necessary control-arm clearance.
Good choice for: More advanced suspension builds where maximum adjustability, premium construction, and high articulation are priorities and aftermarket wheels are already part of the build.
Turn Offroad SUCA-M1 Billet Upper Control Arms
The Turn Offroad SUCA-M1 takes another approach.
These upper control arms use 6061-T6 billet aluminum construction combined with adjustable heim ends and race-grade uniballs.
Turn Offroad specifies the SUCA-M1 for Broncos ranging from stock height through 3 inches of lift.
The adjustable heim ends provide the ability to dial in suspension geometry as ride height changes.
Turn Offroad also addresses one common concern with uniball UCAs: exposure to dirt and debris. The SUCA-M1 uses a sealed design that incorporates the OEM ball-joint boot along with a removable upper dust cap to help protect the uniball from contamination.
Good choice for: Bronco owners looking for a premium billet, adjustable uniball UCA for anything from stock height through a 3-inch lift.
ICON 48400DJ vs 48500DJ vs Turn Offroad SUCA-M1
Here's the simplified version.
ICON 48400DJ
- Tubular DOM steel
- Delta Joint PRO
- Built-in additional caster
- Serviceable pivot bushings
- Factory wheel compatible
- Excellent balance of performance and value
ICON 48500DJ
- CNC-machined billet aluminum
- Delta Joint PRO
- FK rod ends
- On-vehicle caster and camber adjustment
- Premium suspension option
- Requires appropriate aftermarket wheels
Turn Offroad SUCA-M1
- 6061-T6 billet aluminum
- Race-grade uniball
- Adjustable heim ends
- Stock through 3-inch lift applications
- Sealed uniball design
- Strong option for an adjustable billet UCA setup
There isn't one universally “best” Bronco upper control arm.
The right choice depends on your suspension, wheel setup, lift height, driving style, budget, and how much adjustment you need.
Do Upper Control Arms Give Your Bronco More Lift?
No.
Upper control arms do not lift the Bronco.
Ride height is determined by components such as springs, coilovers, spacers, or other lift components.
An aftermarket UCA is designed to help the suspension operate properly at the new ride height by improving geometry, alignment capability, articulation, clearance, or some combination of those factors.
Will Upper Control Arms Help Fit 37-Inch Tires?
Not by themselves.
An aftermarket UCA may provide improved suspension geometry or clearance depending on its design, but installing UCAs does not automatically create enough clearance for 37-inch tires.
Fitting 37s can depend on:
- Lift height
- Wheel width
- Wheel offset
- Backspacing
- Actual tire dimensions
- Crash-bar clearance
- Fender clearance
- Suspension travel
- Bump-stop configuration
Think of the upper control arm as one component of the complete suspension and wheel/tire package.
Do You Need an Alignment After Installing Upper Control Arms?
Yes.
Any time upper control arms are replaced or front suspension geometry is significantly changed, the Bronco should receive a professional alignment.
This is especially important on adjustable UCAs because the new control arms provide additional geometry adjustment that needs to be set correctly.
After installation, suspension and steering components should also be checked for adequate clearance throughout their complete range of travel.
So, Do You Really Need Aftermarket Upper Control Arms?
For a stock-height Bronco or a mild lift that still aligns correctly and retains appropriate joint angles, probably not.
As lift height and suspension travel increase, however, aftermarket upper control arms become increasingly valuable.
For many lifted Broncos, upgraded UCAs can provide:
- Better alignment capability
- Improved caster
- Additional camber adjustment on adjustable designs
- Increased joint articulation
- Better compatibility with high-travel suspension
- Increased strength and serviceability
- More flexibility for future suspension modifications
The most important thing is to treat the Bronco's suspension as a system.
Don't choose an upper control arm based only on lift height. Consider the springs or coilovers, wheel offset, tire size, available suspension travel, intended use, and the suspension manufacturer's recommendations.
A daily-driven Bronco with a mild lift has very different requirements from a Bronco running 37-inch tires, long-travel coilovers, and regularly tackling difficult trails.
Frequently Asked Questions
Do I need upper control arms with a 2-inch Bronco lift?
Not necessarily. Many mild suspension lifts can operate with the factory UCAs if proper alignment and joint articulation can still be achieved. Aftermarket UCAs may nevertheless provide improved caster, alignment range, articulation, or serviceability.
Do I need UCAs with Eibach Bronco lift springs?
Not automatically. The amount of front lift varies by HOSS configuration. After installation, proper alignment and suspension-joint operation should be verified. Aftermarket UCAs can be a worthwhile upgrade for additional geometry correction and articulation.
At what lift height does a Bronco need upper control arms?
There isn't one universal number that applies to every suspension system. Some manufacturers specifically recommend aftermarket UCAs beyond certain lift heights or when their coilovers provide increased wheel travel. Follow the recommendations for the suspension system being installed.
Are billet upper control arms better than tubular UCAs?
Not necessarily. Both can provide excellent performance. Joint design, adjustability, construction, serviceability, wheel clearance, suspension compatibility, and intended use are more important than billet versus tubular construction alone.
Can upper control arms fix alignment problems after lifting a Bronco?
They can help when the aftermarket UCA provides corrected geometry or additional caster and camber adjustment. The exact result depends on lift height and the design of the control arm.
Do aftermarket upper control arms increase suspension travel?
They don't create additional shock travel by themselves, but a high-articulation UCA can allow a high-travel suspension system to use its available travel without the upper joint becoming the limiting factor.
Do upper control arms fit the Bronco Raptor?
Do not assume standard Bronco UCAs fit the Bronco Raptor. The Bronco Raptor uses different suspension components and geometry. Always verify Raptor-specific fitment before ordering.