Headlights and what fits which

[Roadbandit]

I defer to the knowledgeable peoples here. The headlight on my K75s has lost some of its reflective coating

I'm on the hunt for a new headlight. which ones fit which models. Does a K1100LT fit the K75s ….. K100rs fit ? has anybody tried an aftermarket light ?

looking for some tips (other than being good to my mother  :giggles )

[Inge K.]

The same headlight is used on R 80 & 100 GS, F 650 ST & Funduro.
It's delivered by Bosch.....Bosch #0 303 750 600.