Rear spring rate for light racer?
Posted: Wed Mar 04, 2015 1:43 am
A friend picked up a ZXR400 for his son to race. The kid weighs about 100 lbs or about 45 Kg, wondering if anyone around that weight can tell me what rear spring weight they are using for their racebike? I'm 210lbs so not a good reference. 
Thanks
Thanks