Aftermarket upper control arms earn their cost on a Raptor in two cases: you've added travel or larger tires beyond stock geometry, or you've worn out the factory ball joints from hard desert miles. For a stock-height truck on factory-size tires, OEM replacement arms are the honest answer.
The Raptor's factory upper control arms are not a design flaw. Ford specced them for the truck's substantial stock travel, and they hold up well in normal use. The case for aftermarket arms is specific, and it's worth being clear-eyed about whether you're in it.
Two failure modes drive UCA upgrades on these trucks.
**Ball joint wear from desert miles.** Repeated full-travel cycling at speed — the exact thing the Raptor is built to do — works the factory ball joint harder than any other front-end component. Symptoms: a clunk over sharp bumps at the top of travel, visible play when you rock the wheel at 12 and 6 with the truck on stands, or uneven inner-edge tire wear that an alignment doesn't fix. Factory ball joints on hard-used trucks can be done by 50,000–70,000 miles.
**Geometry past stock range.** If you've added a coilover with more travel, a mid-travel kit, or you're running 37s with a leveling change, the factory arm's ball joint operates near the edge of its articulation range at full droop. That binds the joint, accelerates wear, and on aggressive setups can limit usable droop travel. Aftermarket arms with uniball or high-articulation joints fix the operating angle.
If neither describes your truck, replace worn factory arms with OEM and spend the difference on a shock rebuild — it'll do more for how the truck drives.
This is the real decision when buying aftermarket arms.
**Uniball arms** (Camburg, RPG, most race-oriented options) use a spherical bearing — maximum articulation and strength, zero compliance. The tradeoffs are honest ones: uniballs transmit more road noise, they're exposed to dust and water, and they need inspection and eventual replacement like any wear part. In Phoenix-style desert dust, expect to service uniballs every 30,000–50,000 miles. Dust boots help and are worth ordering.
**Sealed ball joint arms** (SPC and similar) trade a little articulation for weather sealing and quiet street manners. For an overland or daily-driven build that sees real trail miles, these are usually the better fit.
This is achievable in a home garage with the truck on stands, but front suspension work carries real consequences for getting it wrong — these torque values and this hardware locate the wheel that steers the truck.
1. Truck on stands at the frame, wheel off, support the lower control arm with the jack to keep the coilover compressed safely.
2. Disconnect the ABS line and brake line brackets from the factory arm.
3. Separate the upper ball joint — a proper separator tool, not a pickle fork if you're keeping any parts.
4. Unbolt the arm's pivot bolts from the frame. Note cam/alignment washer positions if present.
5. Install the new arm, torque pivot bolts **at ride height** — torquing rubber-bushed arms at full droop preloads the bushings and kills them early. Uniball-pivot arms don't care, but check the manufacturer's instructions.
6. Seat the ball joint stud, torque to the arm manufacturer's spec, new cotter pin or lock per design.
7. Reconnect lines, wheel on, torque lugs, and book an alignment before any real driving.
SPC adjustable arms run about $700/pair and add caster adjustability that helps 37-inch-tire trucks track straight. Camburg uniball arms run about $950. RPG billet arms are $1,200+ and are race-grade overkill for most builds — which is exactly the kind of thing Trail Manual will tell you before you spend the money. Add an alignment ($120–$180) to every option; it's not optional after control arm work.
| Part | Vendor | Est. price |
|---|---|---|
| Camburg 1.25 Performance uniball UCA pair | Camburg Engineering | ~$950 |
| RPG Off-Road billet UCA pair | RPG Off-Road | ~$1200 |
| SPC Performance adjustable UCA pair (25670) | SPC Performance | ~$700 |
Written and maintained by an AZ wheeler and driveway wrencher. Always cross-reference your factory service manual — modifications affect vehicle safety and warranty. Work at your own risk.