Replacing these studs when rebuilding your motorcycle would be a sensible precaution. The old items will have stretched and be difficult to torque up properly!
We advise you to also renew the nuts that fit these studs - mixing old possibly damaged or stretched threads with new will not help the situation!
Some related items you may wish to purchase at the same time:
Avoid a mechanical disaster by replacing this Bolt with a new genuine factory item! Have you ordered all the gaskets and seals you will require to complete the overhaul!