Rotor Flow Aero 30mm Crank 130BCD

Rotor is known for squeezing every last advantage possible out of a crankset, and the Rotor Flow Aero Crank is no exception. Designed using computation fluid dynamics (CFD), which allows engineers to study airflow over any part of the crankarm at any point in it's rotation, the Rotor Flow Aero is not only optimized for aerodynamics, but also for stiffness and weight savings.

The Flow crank's aerodynamics start with the spider—solid, of course, but also boasting an additional mounting hole, which doubles the mounting options for Rotor's ovalized Q-Rings. Since drag varies along the length of the crank, the arm gets wider as it nears the pedal, but it's tapered cross-section stays the same. 

Rotor's standard triple-drilled construction is present, and the ends are capped for smooth airflow. 

Both Rotor's Q-Rings and standard 130 BCD round rings are compatible with the Rotor Aero Flow Cranks.