Great fit
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
2005-2022 Ford Super Duty Adjustable Radius Arms | Stock to 6" Lift – F-250 / F-350 / F-450
2005–2022 Ford Super Duty Adjustable Radius Arms | Stock to 6" Lift | F-250 / F-350 / F-450
Ford's solid front axle has no factory caster adjustment. Every inch of front lift pulls caster negative and pushes the axle forward — causing steering wander, poor returnability, and accelerated tire wear that alignment alone can't fix.
The Apoc Industries Adjustable Radius Arms are the correct fix. Built from heavy-wall DOM tubing with greaseable flex joints and cam bolts, they give you full caster adjustability from stock height up to 6" of lift — restoring factory-like steering feel and re-centering the axle precisely.
Fits 2005–2022 Ford F-250, F-350, and F-450 Super Duty (4WD only). Built in East Tennessee, USA.
⚠️ 4WD only — will NOT fit 2WD models.
Features
- Full Caster Adjustability: Stock height through 6" of lift.
- Heavy-Wall DOM Tubing: Significantly stronger than factory stamped arms.
- Greaseable Flex Joints: Long service life, easy maintenance, reduces vibration transfer.
- Cam Bolts Included: Fine-tune alignment without dropping the axle.
- Corrects Axle Shift: Re-centers the front axle in the fender wells after lifting.
- Bolt-On Install.
- USA-Made: Built in East Tennessee by Apoc Industries.
What's Included
- 2x adjustable radius arms (driver and passenger)
- Alignment cam bolts
- Greaseable flex joints
- All required hardware
- Installation instructions
Installation
- Est. Install Time: 3–4 hours
- Tools Required: Basic hand tools, floor jack, jack stands
- Bolt-on — no cutting or welding required
- Professional front-end alignment required after installation
Fitment
- 2005–2022 Ford F-250, F-350, and F-450 Super Duty (4WD only)
- Lift Range: Stock to 6"
Further Reading
Built Right. Backed Right.
Our crew’s on call Monday–Friday, 9–5 EST. Hit us up at 865-983-5004 — real support, done right.
Ford Super Duty Radius Arm — Common Questions
FAQ
Have questions about our Ford Super Duty Adjustable Radius Arms? Find answers to the most common fitment, installation, and technical questions below.
Will this help my steering after adding a leveling kit?
Yes, absolutely. When you add a leveling kit to a 2005–2022 Ford Super Duty, the factory radius arms have no way to compensate for the loss of caster angle — which leads to wandering, pulling, and poor returnability. Our adjustable radius arms restore proper caster geometry, giving you confident, straight-tracking steering and dramatically improved highway feel.
Will this help with tire rub?
Yes, in most cases it will reduce or completely eliminate tire rub. On this vehicle setup, tire rub is usually caused by the tire contacting the rear lower fender well at the pinch weld. By allowing you to push the front axle forward approximately 1/2" to 3/4", you gain critical clearance in that area. Results will vary depending on tire size, wheel backspacing, and offset — but these radius arms are one of the most effective fixes for rub on leveled and lifted Super Dutys.
What is the cam bolt adjustment used for?
The cam bolt gives you precise, on-vehicle caster adjustment without swapping parts. After installing your lift or leveling kit, you simply rotate the cam bolt to dial in your ideal caster angle. Correct caster is essential for stable straight-line tracking, proper steering returnability, and reducing stress on your front end components — all of which suffer when a lifted truck runs factory-length, non-adjustable arms.
How much lift does this radius arm work with?
The stock height is 6" of lift. These radius arms are designed to restore the caster angle and axle position compromised when lifting the front end, making them an essential upgrade when the factory arms can no longer maintain proper geometry.
Why does the radius arm use a flex joint at the frame mount?
Our radius arms use a flex joint at the frame mount to maximize articulation — whether you're tackling technical off-road terrain, overlanding trails, or the daily punishment of unpaved job site roads. Unlike a rubber bushing, which limits range of motion and can bind under flex, a flex joint allows full, unrestricted articulation without sacrificing durability or geometry. The result is better axle movement, reduced bind, and a more capable suspension under real-world conditions.
Our customer support is available Monday to Friday: 8am-8:30pm.Average answer time: 24h
Built to Take a Beating. Engineered to Keep You Straight.
Eccentric Cam Bolts
Cam bolt for easy on car adjustment of caster
DOM Tubing
DOM tubing construction delivers unmatched strength. Straight main tube engineered to withstand the most demanding terrain.
Adjustable Upper Arm
Adjustable upper arm positioning delivers correct caster geometry at any lift height. The integrated cam bolt allows precise fine-tuning — no guesswork, no compromises.
2005–2016 Ford Super Duty F-250 Adjustable Radius Arms
Why It Installs Easy
Our 2005–2016 Ford Super Duty F-250 adjustable radius arms are engineered for a straightforward, no-drill installation. Designed for lifted and leveled trucks, these USA-made radius arms deliver improved suspension geometry, reduced bind, and long-term durability — whether you're running a 2" level or a full lift kit.
No Drilling or Cutting
A true bolt-on installation — no fabrication required. These radius arms are designed to work with your factory mounting points, keeping the install clean and straight forward without modifying your frame or suspension.
Remove & Replace
Simply remove your factory radius arms and bolt on the new units. No special tools or professional fabrication needed — just basic hand tools and a jack. The arms are engineered to drop directly into the factory locations for a hassle-free swap.
Preset Measurements Included
No guesswork on arm length. Every kit includes a measurement sheet with the exact arm lengths for your specific lift or level height. Simply set your arms to the specified measurement during install and you're ready to go. Fine-tune alignment with the included cam bolt for dialed-in geometry.
Customer Reviews
Overall rating: 5.0 / 5 from 12 reviews.
I am extremely torn the radius arms looks amazing and extremely well built. My concerns is that after I ordered the products I didn’t get any updates about what was happening with order till I called in to find out what was happening a week later then found out that they are made to order witch is perfectly fine but some communication would be wonderful either prior to ordering or after the order was placed. Then to top it off the same arms I ordered are now $200.00 less expensive than when I ordered them. I haven’t had the chance to install the product yet but I am sure they will serve me well once I get the chance to use them.
2005-2022 Ford Super Duty Adjustable Radius Arms | Stock to 6" Lift – F-250 / F-350 / F-450
The adjustable radius arms are very well built and the customer service is top notch.
2005-2022 Ford Super Duty Adjustable Radius Arms | Stock to 6" Lift – F-250 / F-350 / F-450
Haven't installed yet. Very high quality parts. Looks bad ass! Can't wait to install.
2005-2022 Ford Superduty F-250/350/450 Adjustable Radius arm stock to 6" lift
The Details are worth the wait! Thankyou!!
2005-2022 Ford Superduty F-250/350/450 Adjustable Radius arm stock to 6" lift
If you want 1st class top quality products apoc is who your gonna call. I installed apoc 2.5" front end leveling blocks and fox shocks to give it the look I wanted.Then installed apoc adjustable radius arms had an alignment on my f250. Truck has never steered and handled better especially when pulling my 12.000lb. 5th wheel. Thank you to everyone @ Apocind!!
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
Its exactly whats in the picture. Have a 2.5 lift on a 2006 f250. Was able to get my coil springs from bowing forward. Will still need an adjustment track bar and drop bracket.
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
Great arms!! Heavy DUTY. Great paint. Nice grease places. All the adjustments you will need!! Will be proud to have them my truck!!
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
Great product
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
Amazing quality, great price, great people easy to deal with! Highly recommend
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
This is my second purchase from APOC. I don’t leave reviews for anything, but APOC’s service necessitates one. These guys are on the ball, fantastic customer service when I called in, and always extremely prompt to respond and pleasant to converse with. When I ordered the Radius Arms they immediately contacted me to let me know that they were out of cam bolts for the arms but would get them ASAP and ship everything out. I was expecting a couple of weeks. Well, 4 days later I received the arms! I will also say my previous order was just as fast as well. The radius arms are absolutely beautiful and well made, they include high quality “Roto-Joints” that are the same as what I’ve used on some of my pro touring muscle car builds, almost all the benefits of a solid bushings, no binding etc... but without the harshness and increased NVH. It’s becoming increasingly rare to find a company that sells quality parts, has top notch customer service and actually gets you your products in a quick and efficient manner. It’s a fresh breath of air to deal with APOC, they make it feel like 2018 again!
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
Ordered the radius arms and they called me right away to let me know status of them. Had a little trouble when they showed up and they helped me out! HIGHLY RECOMMEND USING THEM!!
2005-2022 Ford Superduty F-250 Adjustable Radius arm stock to 6" lift
articulation
Why 2005-2022 Ford Super Duty Trucks Need Adjustable Radius Arms After a Lift
A practical look at how lifting a 2005–2022 Ford Super Duty changes front-end geometry, and how adjustable radius arms and flex joints help restore control on the road and articulation off-road.