Hello fellow ST riders. Just a bump to the question way back in this thread about Givi bars (TN355), or Kappa (KN355) fitting with Yamaha accessory crash bars. The Givi/Kappa bars in pictures look as if they reach around the Yamaha upper loop where they would connect together at the front of the cylinder head. They also look to clear the lower Yamaha cage at the mounting point of frame tabs at the rad. and the battery cover, they appear to share the same frame tabs. Although there is probably a conflict at the lower front rad. support tab. If that is the only problem then it may be possible to just remove the rad. support tab from one or the other.
I have found the Yamaha bars to provide decent protection for the engine cases, but not the upper plastic and have had to replace one rad. fan already.
I am aware of the Mastech and DS Protection bars from this site, but have not been able to get any useful info on those yet.
I look forward to hearing from anyone who knows anything about protecting the upper fragile bits while keeping the Yamaha bars for the lower.
Cheers Marsh