D120 - Brk Axle, TW= 80, 12 1/4x5, Air, Flg-***OIL HUBS***, 5.00 Tube, Std Bkts, 30/30, 21.12 Cam, 28 Spline, Auto Slk, Strt, Tramec, A/C ROD LEN.(TO CLEVIS)=5.62, 8-6.50 Hi-Pro, H-D, 5/8-18 Stud, Aluminum Bolton Fortress Cap, UndrSlg, SC= 53, 3.00 Wide,Adj, 30"Sgl Slp, 7500#, Sprgs, STD AIR CHAMBER ORIENTATION, Calculate hubface & spring c., Calculate Leaf Sp Capacity, Tag Capacity is: 12000, Whl Nuts