This is a pair of the Currie aluminum 1 ton outer knuckles, complete and ready to install. Knuckles are cast out of 206T6 aluminum for maximum weight savings, yet still retain superior strength. Ford 1 ton ball joints are included and installed, and any stock Ford 1 ton unit bearing - as well as the Currie modified 1 ton unit bearings will bolt right up. Features of the knuckles include threaded bosses in the top of the knuckles for mounting the Currie steel upper steering arms that are included with the knuckles, a pad with threaded bosses on one of the edge faces of the knuckles that allow you to fab and install additional steering components, steering stops cast in the front and back side of the knuckles and adjustable stop bolts installed, and threaded bosses for mounting of radial-mount Wilwood Dynalite calipers. An additional unique feature of these knuckles is that they fit either side. All provisions on these knuckles are mirrored on both sides, and the upper steering arm bolt pattern allows for the same steering arm to be used right or left, front facing or back facing. Polishing available for an extra cost. NOTE: These knuckles are only for use with Wilwood brakes with radial mount calipers only. Not for use with factory F-250/350/450 brakes.