THM Clavicula SE PowermeterClavicula sine exceptione No rule without exception! Our top line, full carbon crank with integrated carbon axle is engineered like no other. In development we focused on optimizing its geometrical and structural definition, based on a precise analysis of load paths. As a result, it is extraordinarily stiff in all planes, exactly whats required for loss free power transmission. We are particularly proud of the patented connection between left hand