Gary: My experience with open wheel bikes shows that a solid rear can work (251 mph in 03) but it is very much dependent on the salt condition. At SpeedWeek that year it was smooth and easy; at the World Finals it was bumpy and we had a modular rear wheel come unbolted and our water tank crack. I am not sure a shock can react quick enough at 370'/second but I am looking into that. I say give it a try. Best of luck. Larry