Yamaha XS1, XS2, TX650, XS650 Rear Drum Brake Axles and Spacers
70-73 256-25381-00 Rear Axle, 20mm Dia, 250mm length
74-84 341-25381-00 Rear Axle, 20mm Dia, 275mm length
70-73 90387-20201-00 (256-25383-00) Right Spacer, 15.2mm length
74-84 90387-20444-00 (341-25383-00) Right Spacer, 24.9mm length
70-84 90387-20176-00 (256-25377-00) Left Spacer, 30.9mm length
70-84 256-25367-00 Left Dust Cover
70-84 90171-18008-00 (256-25382-00) Axle Nut, M18-1.5mm, 27mm (1-1/16") Wrench
Great information, do you have original swingarm inner dimensions for 74 and later... I try get "custom" spacers to my hardtail.