This arm replaces the stock length lower and gives you the ability to add a hydraulic/air bump-stop and also run limit straps. CAD designed, this arm is considerably stronger than the cast aluminum stock arm, has internal gusseting and pivots on FK 1″ PTFE lined uniballs at the frame rather than the cheap rubber bushings that constantly bind and flex under braking. We use a FK PTFE lined 1.50″ uniball at the spindle for maximum strength and articulation rather than the factory ball-joint. No modification to the spindle is necessary as we use machined heat-treated stainless steel mis-alignment spacers that adapt the uniball to the tapered ball-joint spindle hole. It also has a provision to use the factory sway-bar with our optional sway-bar link kit.
To attach the spindle the 1.50″ uniball we use a Mil-Spec 21250 NAS 12 point aircraft bolt. These bolts are rated 180,000 psi minimum tensile strength and 108,000 psi minimum shear strength. A stronger or higher quality bolt does not exist, hence why the Military, NASA and Aircraft companies use these. They have a specific shoulder/grip length and the head design yields higher tensile and shear strengths compared to any Grade 8, 9 or 12.9 bolt out there. They are made to the highest quality control standards out there.
The arms also have an integrated jack point underneath for secure lifting especially on off camber off-road terrain.
For a few wheel and tire combinations a steering stop is needed. Crashing the spindle into the lower arm and locking up the lower ball-joint isn’t the correct way to limit the steering like others do. We are limiting the steering at the rack by installing a press-on machined delrin spacer behind the inner tie rod joint or heim clevis. With the small spacer installed turning radius goes unnoticed as it’s only a very slight change.
The arms are CAD designed, laser cut, CNC formed, MIG welded, powdercoated Camburg gray and are ready to install with all the necessary hardware and spacers you need included. Combine this with our 1.50″ uniball upper arms and FOX 3.0 coilovers for the ultimate Raptor suspension.
- Made in the USA 1.00″ and 1.50″ uniballs
- Mil-Spec NAS 12 pt bolts
- Boxed construction internally gusseted
- Ability to run hydraulic bump-stops
- Tabbed for limit straps
- Integrated jack point underneath
- Ability to run factory sway-bar