Originally Posted by Searley

Hi Mate


During hard corning and more so under heavy braking forks have to deal with extreme load, this load is usually concentrated near the bottom yoke and can cause a slight flex in the fork. USD forks bolt to the yokes with the thicker part of the forks (the leg) and therefore offer greater rigidity and more resistance to flex. This can also provide better feedback and generate more confidence for the rider.

But you would only notice the difference if you were riding extremely hard, probably on a track.

The only other benefit of using USD forks from a GSXR would be so that you could use the GSXR radial brakes which provide much better stopping power.