Low Bar Storage Install bolts, washers, backing washers, and lock nuts securing low bar storage to lower crossmember using two 3/4" wrenches. Item Description Qty. 1 Low Bar Storage 1 2 Lower Crossmember 1 3 Bolt, 1/2" x 4 1/2" 2 4 Lock Washer, 1/2" 2 5 Backing Washer, 1/2" 2 6 Lock Nut, 1/2" 2 Tighten hardware to 20-25 ft-lb (27-34 Nm). Parent topic: Install Add-Ons