Radius Arm: Description and Operation

The tension strut controls the fore-and-aft movement of the rear knuckle.
There is one tension strut per side of the rear suspension. The leading end of the tension strut attaches to the frame rail while the trailing end of the strut attaches to the lower end of the rear knuckle. The tension strut is isolated from the rest of the rear suspension through the use of rubber bushings located at each end. The rear bushings (bayonet type) can be serviced separately, the front bushings (spool type) cannot.