Hands-on with The Sufferfest’s new 4DP Platform - DC Rainmaker

4dpWhat is 4DP? Four-Dimensional Power® (4DP®) uses four key performance metrics—Neuromuscular Power (NM), Maximal Aerobic Power (MAP), Functional ThresholdHi All, I have a 1992 4DP ,which is basically standard. I also have some 4DP-11 cylinders which I bought some time back as 'spares',the question is would there be any benefitnegative