Abstract: A one-piece sleeve fitted within an aperture of a top arm of a spindle. The sleeve has an aperture therethrough angled with respect to the central axis of the sleeve. The angled aperture is constructed to receive a tapered ball stud integral with a ball mounted within a control arm. The ball stud extends through the aperture with the fastener threaded thereon to abut the sleeve and to draw into the tapered aperture a tapered section of the stud to expand the sleeve and frictionally lock the sleeve within its mounting aperture in the top arm of the spindle and the stud within the angled aperture. The sleeve when unlocked, can be rotated to adjust the camber, or pneumatic trail of the wheel assembly.

Abstract: A sleeve assembly for adjusting the camber, and castor, or pneumatic trail, of a wheel assembly includes an inner sleeve with an aperture therethrough adapted to receive a ball stud. The inner sleeve having a partially spherical surface which is received in a complementary socket in a second sleeve which is fitted within an aperture of an upper arm of a spindle. The inner sleeve is pivotable with respect to the outer sleeve to incline the aperture therethrough with respect to the central axis of the outer sleeve such that the upper and lower openings of the aperture have opposite eccentricities with respect to the axis of the outer sleeve to angle the stud varying degrees with respect to the upper arm of the spindle.