welcome to kzr and obviously a picture of your bike will be welcome.
the gpz1100 frame has many improvements and is stiffer compared to the earlier 900-1000 frames, all from lessons learned during the superbike racing days. Are you really sure you need the bracing?
I been road racing for the last 10 years and I still see a lot of people in the winner circle with stock, non braced frames (but surely good suspension).
just cancelling the engine rubber mounts for instance could help a lot with rigidity by making the engine contribute stifness. Would think twice before starting to add bracing, extra weight slows you down and the 1100 is already quite heavy!
