I have an '88 K100LT that loves to kick itself out of second gear into neutral. I believe this is a relatively common problem, but the odometer only has 30k miles which seems early for it to be happening.
As I understand it, these are the available options:
I have a very well kept 1988 K100 with 14,000 miles for sale located in Virginia Beach. The bike runs great and needs a new home. All offers considered. Custom paint, saddle bags and a rear bag. Corbin seat. Looks great runs great.