These are very old now but work fine,I've got KTM handguards underneath.I wouldn't use them without the guards because they can interfere with the controls and switches.I've cut a hole in the sides and screwed the bar weight through.
I get a bit of a weave on above 90 especially with the top box fitted as well!
A mate gave them to me,I think MPS may have been a mail order place like M&P or Busters way back.