Middle drive gear temp?

[Tinman]

I was wondering what the normal operating temperature of the middle drive gear is on y'alls bikes.
I thought mine was hot until I touched one on another XS11 after a long ride. Mine was hot as in could I could leave my hand on it for a few seconds but the other one? wow!
I know heat from the engine migrates to it so it should be hot but how hot is too hot?

Thanks!