Foutz Motorsports Billet Aluminum Rear Suspension Upper Arms - Uniball Version 2021-2024 Ford F-150 Raptor 2023-2024 Ford F-150 Raptor R

• 2 FMI billet aluminum rear upper trailing arms, with spacers and hardware
• 1" FK uniballs
• Custom-machined 17-4 stainless steel spacers sized for the stock mount locations
• Urethane wobble stoppers on the front mounts to hold the arms in alignment
• Aluminum ball post for the factory wheel position sensor, so the truck still reads ride height correctly

The ball post is machined from aluminum on our billet links — our fabricated rear upper links use a steel ball post welded in instead. Either way it is only ever fitted to an upper link, never a lower, which is why the uppers matter to the truck's electronics in a way the lowers do not.

The Gen 3 Raptor runs a five-link rear axle. The lower links take acceleration and braking load; the uppers control axle wrap and hold pinion angle. The panhard bar handles side to side.

The factory upper arm is stamped sheet metal, folded into shape and welded at the seams, carrying its load through rubber bushings at both ends. Rubber is chosen for isolation, not location — it is soft on purpose. Under load it compresses, the axle rotates relative to where the chassis thinks it is, and the rear end stops settling.

A machined billet arm is one piece with no seams and material placed where the load actually is, and the uniball gives it a defined pivot instead of a squishy one.

We build the Gen 3 billet rear arms two ways. Both are billet aluminum, both bolt into the factory mounts, both give the same 15 inches of rear wheel travel. The joint is the only difference.

Uniball — this kit. A 1" FK uniball at the pivot: tighter and more direct than an elastomeric joint, and the uniball itself is a replaceable wear item rather than something that scraps the arm. FK is the industry benchmark and these arms have been on Raptors for years.

Ultra-Flex — our patent-pending joint. Greaseable on the truck through an external zerk, quieter as it wears, rebuildable with a urethane body, and better in wet or salted conditions. See the Ultra-Flex rear upper arms.

Fits the Gen 3 and Gen 3.5 Ford F-150 Raptor, model years 2021, 2022, 2023, 2024, 2025 and 2026, including the Raptor R.

Stock-length only — this is not a long travel kit and it does not change rear geometry.

Bolt-on, into the factory mount locations, with the spacers machined to suit. No cutting, no welding, no fabrication and no alignment required afterwards.

Support the truck safely and take the load off the rear axle before removing the factory arms. Guides are at Install Instructions, and we do in-house installation in Mesa.

Three options: raw billet aluminum, black anodized and FOX orange anodized.

Raw is a finish choice, not a lesser part — plenty of builds run raw billet deliberately for the machined-aluminum look. Anodized parts should be cared for as anodized aluminum; see the care notes before you take a pressure washer or a harsh wheel cleaner to them.

Do these fit a 2025 or 2026 Raptor?

Yes. They fit 2021 through 2026 Gen 3 and Gen 3.5 trucks, Raptor R included.

Is this the uppers only, or the full set?

Uppers only, sold as a pair. The lower arms are listed separately, or take both together as the complete billet rear arm kit.

Will the factory wheel position sensor still work?

Yes. The upper arms carry an aluminum ball post for the factory wheel position sensor, so the truck reads ride height the way Ford intended. A lower link never carries one — the sensor only ever mounts to an upper.

Is the uniball serviceable?

Yes. It is a wear item by design and presses out for replacement, so the arm stays on the truck for life. Replacement uniballs are under Serviceable Parts.

Will billet arms on uniballs make the ride harsh?

You will hear and feel more of what the rear axle is doing, because a uniball transmits what a rubber bushing absorbed. That is the point of the part. If you want precise axle location with more isolation, look at the Ultra-Flex version.

What are the wobble stoppers for?

The urethane wobble stoppers sit at the front mounts and keep the arms from rotating out of alignment in the bracket. They are urethane, not Delrin.

Where are they made?

Designed, machined and finished in-house at our facility in Mesa, Arizona, USA.

• Billet panhard bar — the one we would buy first
• Billet rear lower trailing arms — uniball
• Rear bump stop kit and rear limit strap kit

Side by side on Gen 3 Rear Links & Panhard Bar, or the full catalog on Gen 3 Raptor Rear Suspension.