On the FZ1 , I would go with the longer 280mm or 11 inch horizontal or the adjustable stem ultimate folding mirrors 225-325 mm or 9-13 inch horzontal. I suggest 243mm or shorter for dirt and longer 280mm for road bikes. Instead of the bar mount get the HYM mirror mount for the clutch perch. You really don't want the clutter of a bar mount on an FZ1.... The one I carry has the 15º angle to avoid interference with any reservoirs.