The Rotor Spider features a cleverly designed spline interface that provides a robust yet smooth engagement when mounted to the shaft, maximizing the efficiency of power transmission when pedaling. In combination with a VEGAST / ALDHU crank and the oval Q RINGS chainrings, the innovative Spider offers the refined OCP technology, which allows an optimal chainring position adjustment in precise 1-degree increments.

The OCP technology allows a more efficient pedal stroke to reduce the load on the knees and possible injuries. The improved 12.5 percent ovality enhances the performance advantage by allowing full activation of muscle groups, generating more power and reducing long-term stress on the knees.

The Spider is compatible with all Rotor cranks with OCP mount.