These osymetric chainrings are not the standard 39round39 type of chainrings nor are they oval or ellipse either but asymmetric this unique shape twin cam has been designed to maximise the riders power output and performance with every pedal stroke allowing for a 7 10 power watts increase resulting in a gain of speed by 3 so osymetric claim not only does this increase riders performance it can reduce lactic acid by 10 also picture shows osymetric chainrings fitted to a road bi