Nut

A good sound steering stem assembly is vital for fine steering and tracking true in the straight ahead position. If the machine has ever suffered accident damage then close attention should be paid to all the vital parts that make up the triple tree.
This part and those listed below may be on your shopping list. The more parts that are replaced the better the overall results will be:

5141001D91
5141001D80
0926530009
5153001D01
5153001D01EE3
5155334300
3595601D10
3595701D10
5135201D00
0926525019
5164349002
5163128000
0713008303
071300830A
5132801D80
5624001D00
5624301D00
5135305C00
5135622012
0831620053
3595014A00

A damaged or very slightly twisted steering stem assembly will spoil the steering and will be an annual safety test failure point.

Add as many parts as you wish to the same shopping cart, new bearings and dust seas for example, and still only pay the same single fixed price shipping cost.