On the bigger weekends there are quite a few big bikes that show up at KP for the racing. Not as many as you would see at Utah or LS, but still some nice fast bikes. Turbo GSXR1000's, 16mil DM, 4mil cheetahs, 4mil cubs, 10mil cubs, snomo powered bikes...
If you venture out on the dunes, you won't see anyone. If you stay at the big hills and want to race there will be plenty of action.