Although no one seemed to know i can tell you the 1990 k1 stain tune exhaust is a direct swap for the 1995 k1100lt staintune on 1995 k1100 eliminates most of annoying vibration and is smoother and quicker to accelerate ive been told bmws dont respond much to less back pressure but in this case difference is greatly noticed i hope this helps others in the future and i hope to see some of your in hamburg at rally this week end
