A vehicle article carrier having a cross bar which makes use of a pair of end supports for securing the cross bar to a pair of side rails. Each of the end supports includes an actuating member which is pivotally mounted to a housing of its associated end support. An inverted V-shaped biasing member is disposed within the housing and its outermost ends are captured within a first recess in the housing and a second recess formed in an internal wall of the actuating member. An over center action is employed to assist in biasing the actuating member into its unlocked and locked positions. The actuating member includes a locking post portion for engaging with one of a plurality of apertures formed along the length of its associated side rail. The end support can be constructed with a reduced number of independent component parts, thereby simplifying its construction and reducing its overall cost.