Rear suspension on modern sports machines, as you will be aware, has a good pasting when ridden hard! The deterioration with the handling is gradual until it suddenly falls off a cliff - before it does make that transgression, an overhaul may be a case of a stitch in time saves nine?
This part and the others listed below are just some of the wear items you may choose to replace:
It is not recommended to interface old worn items with new in this assembly. Do not forget to order all the fasteners you will require to ease the reassembly process and because new fasteners just look nicer!