The clever spline interface between the Direct Mount and the axle delivers a robust yet smooth engagement allowing you to maximise the efficiency in transmission of power in your pedal rotation. This advanced solution is achieved thanks to the patented anchoring system of our Optimal Changing Position (OCP) Mount technology. The unique design of the teeth incorporates all the experience gained in the technological development of oval Q Rings and provides a consistently fast and precise gear shift in the most challenging of cycling conditions.

Round BCD110x4 12-11s chainrings compatible with all ROTOR cranks using BCD110x4 spider and INspider power meter in combination with Shimano 2x12s or 2x11s groupsets.

In addition, these chainrings are also compatible with Shimano Dura-Ace FC-R9200-P, FC-R9200, FC-R9100 and Ultegra FC-R8100, FC-R8000 cranksets, offering fast and precise shifting while keeping weight very low.

ROTOR round chainrings come to complete the chainring range for those cyclists who have not yet decided to try Q RINGS oval chainrings.