These Osymetric chainrings are not the standard 'round' 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
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