I do not believe one exists for the R3. Don't let that turn you off to the R3 as a track bike, though. Your left hand is the best slipper clutch money can buy. I've been racing a ninja 250 for years with no slipper clutch with no problems. You just need to focus on really feathering out that last downshift on corner entry.I am looking at the R3 for track riding. I like the bike, only drawback is no slipper clutch, does anyone know of one for it?
I know it will really be nice to have on track.
If you ever get a chance, go to the Yamaha Champions Riding School or hook up with Ken Hill Coaching...they do some great drills on this. It's a good skill to have even if you do have a slipper clutch.