My 5 year old son just got into BMX and he wants me to ride with him on the track. I grew up racing motocross and went all the way up to intermediate and then took a long break. Now im back into the mx and I want to start bmx track riding with my son. I am 40 years old, 160 pounds, 6 ft. Im riding my motocross bike 2 times a week and can still ride and clear all the jumps my question is for bmx track riding and racing, I have no clue what to get between the redline pro 24 or the redline pro 20. And what class would i start in? Any suggestions or help is appreciated.