Originally Posted by brucifer
Ivan, as near as I can tell with a tape measure, the left crankcase is 3 inches or maybe just a hair under.
I don't have a cover off at the moment to measure the other dimension for you. Hopefully someone else can.
Thank you Bruce!
This is good news, the thickness of the left crankcase XR500R = 75 mm.
I think 6 mm sitting in the stator cover.
I'm very waiting for confirmation from having the opportunity to measure the cover!