Who engineeers this stuff????

Maybe high temp RTV on the threads?

When I put it back together I am goin got coat the threads of the bolt with some rtv.

And be painfully slow

bike is not actually a H-D...it is a Custom Chrome Bike in a Box form several years ago. But it is basically all aftermarket H-D parts. Has a Rev Tech 110" motor, puts out 125 hp and the same amount of torque so it is not exactly slow. My old GSXR1000 would destroy the thing, but it is quick enough to be entertaining.....