An adjustment mechanism includes a first pin connectable to a crossbar, a second pin connectable to a roof rail, a housing assembly disposed on the second pin, the housing assembly including a bearing and a first biasing member both disposed within the housing assembly, the bearing translatable within the housing assembly, the biasing member disposed between the bearing and the housing assembly to bias the bearing member, the first pin disposed through the bearing, and a second biasing member disposed on the second pin between the roof rail and the housing assembly to bias the housing assembly. The first pin is rotatable within the bearing to rotate the crossbar, the first pin is translatable with the bearing to move the crossbar in a first direction and a second direction, and the housing assembly is translatable along the second pin to move the crossbar in a third direction and a fourth direction.