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Aluminum Beam Arm Kit Chromoly

SKU: 101441
Aluminum Beam Arm Kit
Castor Options - Please Choose
Base Price: $1205.00
Selected Options: $0.00
Total Price: $1205.00
Availability: In Stock


Aluminum Beam Arms 
Chromoly Joints – 2005 - 2020 Ford Super Duty

F250 F350 F450 F550
One Up Offroad’s new Aluminum Beam Arms 
TM (ABA) for the 2005+ Ford Super Duty. 

Improving upon the OEM design, these ABAs have a billet aluminum beam design with steel axle blades. This innovative new design lets the customer choose what caster they want in their arms. To date there has not been much transparency about what the radius arm caster change from stock really is from other suppliers. We are trying to simplify this. If you level your truck and take it to get aligned and you only have 2 degrees of castor, but you need to be in the 4 to 6 degree to be drivable. You can add that castor without putting your ball joints in a bind with ball joint cams. What if you need more room between your tire and your fender because you installed larger than stock tires and wheels. The 1/2 inch extended option will give you the room you need without causing clearance issues at your track rod bracket.

 While the factory designed the stamped steel arm set for one ride height and axle location, One Up Offroad created a new design to suit each individual build.

Fixed length is the simplest & lightest way to run these arms. If you are an experience suspension installer and know what you need for an arm, you can bolt these on quick and simple.

Available options in fixed length.
Stock Length - Stock Castor - Fixed Length
Stock Length - +2.5 Degrees Castor - Fixed Length
+1/2" Length - +2.5 Degrees Castor - Fixed Length
+1/2" Length - +5 Degrees Castor - Fixed Length

Adjustable Castor is the easiest way to get your castor in spec if you don’t know where the castor needs to be before you order the arm.
Available options with Castor Cam Bolt.
Stock Length - Minus 1 to + 5 Degrees Castor - Adjustable
+1/2" Length - Minus 1 to + 5 Degrees Castor - Adjustable

 if you need a fully adjustable Radius Arm check out the OUO Adjustable Link Arm
Proper castor adjustment aids drivability and self-centering of the steering wheel. This, coupled with extended length options of the ABA, helps get the axle centered in the wheel well allowing a full range of steering.   
Highlights of the Aluminum Beam Arm:
  • Chromoly Joints handle maximum loads from boosted launches, drag racing, Sled Pulling, Pulling trailers into soft loose traction areas. If you use the truck to the maximum torque load with the front Drive you need the ABA’s with Chromoly joints.
  • If you have stock wheel travel and do not use 4x4 front drive to the maximum torque load look at the ABA’s with Street Joints with Rubber Bushing at the frame. Rubber Bushing at the frame keeps the OE ride and feel of the front suspension.
  • Direct, 100% replacement for OEM stamped steel arm. Can be used with One Up Offroad lift kits or combined with aftermarket radius arm drop brackets and used in the OEM frame mount.  Note: Aftermarket drop bracket mounts may need to be slightly widened.
  • Maximum offset profile allows for improved turning radius with the use of larger tires and alleviates clearance issues created by OEM stamped arms. 1 ¼ more than any other arm.
  • Maintains correct front axle pinion angle through the entire range of travel (even at full droop), allowing full use of four wheel drive without causing the driveshaft to bind.
  • All components are powder coated or zinc treated to exceed OEM standards for corrosion resistance. 
  • CAD designed and cycled with OEM chassis models to ensure proper fit and clearance.
  • CNC machined components to ensure the best quality in the industry for perfect fit and finish.
  • All Grade 8 hardware and instructions included.
  • The original Aluminum Beam Arms - Invented and pioneered by One Up Offroad.  Tested by our test team to ensure best performance.
  • Made in the USA with pride.

Approx Weight: 60 lb. / Each
Dimensions (LxWxH): 14.00 x 14.00 x 6.00 in.
40.00 x 10.00 x 10.00 in.


Please understand that we do our best to stock every single item that we sell in our webstore at all times, but occasionally, we sell out before our next run of parts are ready to go.

To verify stock on an item before you order, you can always email us at, and we will gladly stock check items. You can also give us a call at 888-98ONEUP and we will do the same.

Most items usually ship within 24 hours, but in the rare occasion of a backorder, we usually fill all backorders within 2-4 weeks.

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