2005–2022 Ford Super Duty Adjustable Radius Arms | Stock to 6" Lift – F-250 / F-350 / F-450 – USA-Made

Restore Perfect Steering Geometry. Eliminate Tire Rub. Fix Caster After Leveling or Lifting Your Super Duty.

Lifted your 2005–2022 Ford F-250, F-350, or F-450 Super Duty and now dealing with wandering steering, an off-center axle, or accelerated tire wear? That’s a caster problem — and these arms fix it. Apoc Industries Adjustable Radius Arms are precision-built in East Tennessee from heavy-duty DOM tubing, giving you full adjustability from stock height up to 6" of lift. Restore factory-like handling, center your axle in the fenders, and get back to driving with confidence.

⚠️ 4WD Only — Will NOT Fit 2WD Models

Why Apoc Industries Adjustable Radius Arms Are the Top Choice for Super Duty Owners

• Full Adjustability: Dial in caster for stock height all the way up to 6" of lift — perfect for current and future builds.
• Heavy-Duty DOM Tubing: Far stronger than factory stamped arms — built to handle the abuse of daily driving, towing, and off-road.
• Greaseable Flex Joints: Long-life performance with easy maintenance and reduced vibration transfer.
• Includes Cam Bolts: Simple alignment adjustments for optimal steering geometry right out of the box.
• Built Tough in the USA: Designed and manufactured in East Tennessee — engineered for the demands of the Super Duty platform.
• Easy 3–4 Hour Install: Bolt-on design with basic hand tools. Full instructions included.

Why You Need Radius Arms After Leveling or Lifting a Super Duty

Ford’s solid front axle has no factory caster adjustment. Any time you raise the front of your Super Duty — whether with a leveling spacer or a full lift kit — caster is reduced, which causes:

• Steering wander at highway speeds
• Poor steering returnability — the wheel won’t self-center properly
• Accelerated front tire wear
• Axle shift — the front axle moves forward and off-center in the fenders
• Vibration or shimmy in some cases

Adjustable radius arms are the correct fix. They allow you to re-establish proper caster angle and re-center the axle — something cam bolts alone can’t fully address on larger lifts. Wider wheels with aggressive offset will feel the effects of poor caster even more than factory-offset wheels, making this upgrade especially important for custom builds.

A professional front-end alignment is strongly recommended after installation.

What’s Included

• (2) Adjustable Radius Arms with Heavy-Duty DOM Main Tube (Driver & Passenger)
• Alignment Cam Bolts
• Greaseable Flex Joints
• All Required Hardware
• Detailed Installation Instructions

Fitment

2005–2022 Ford F-250, F-350, and F-450 Super Duty (4WD models only; confirm exact year/engine for best results).

Upgrade Tip

Pairing these radius arms with a leveling kit or lift kit? Check out our complete Ford Super Duty suspension lineup — including leveling spacers, lift kits, and radius arm drop brackets — for a complete, dialed-in build.

Ready to fix your Super Duty’s steering for good? Add these USA-made adjustable radius arms to your cart today and feel the difference premium American-made suspension makes.

Explore More for Your Build

• 6" Tubular Radius Arm Lift Kit for 2017–2022 Ford F-250 Super Duty – Complete lifted suspension solution.
• Radius Arm Drop Brackets for 2–4" Lift – Extra flexibility for your build.
• Full Ford F-250 Super Duty Collection – Browse more lift kits, leveling spacers & accessories.

Apoc Industries – Proud East Tennessee manufacturer of premium off-road suspension components. Built for enthusiasts, by enthusiasts. Direct-to-you pricing with fast shipping and expert support.