The sportbike was NEVER designed to carry----
Think of it, these are replicas of the road racing m/cs with lights, signal lights, stop lamp, mirrors, horn & all to make them street legal.
In many cases the riders have changed the so called pillion section into a solo saddled bike.
I had to laugh when the Honda RC-51 came out & of all things pillion footrests & a blip or a saddle for someone else & felt shocked the same was on my 929.
IF you want to carry a pillion passenger, then start looking around for another type of bike like a sport-cruiser, Cruiser, or Touring bike.
Have any of you, with the latest sportbike, ever gone out on a pleasant 300 plus mile trip with g/friend or wife riding pillion on that minor bit?
Many of the sportbike riders are purchasing the Yamaha FZ1 as it is more comfortable for their g/friend or wife for short runs as the saddle is a bit more sensible as is the more upright riding position for HER.