RockJock® III - Ductile Iron RockJock® Currie high pinion 60 housing built to your specs. with new tubes, Reid Racing king pin style 1 ton inner knuckles installed, and bolt on replaceable lower AR400 abrasion resistant steel skid plate. Unit is completely welded and finished to spec. and is supplied with carrier caps, bearing spacer to adapt the larger front pinion bearing to the pinion gear, and pinion seal. NOTE: Currie does not supply any king pin outer components!