Double trays Rotor Q Rings q39t(for 53&52&46) bcd130x5 inner

 Description by velo-store

They minimize the time spent in neutral while pedaling. Q-Rings reduce the detrimental effect of neutral thanks to their oval shape. The sprocket is at its lowest level when neutral is reached, allowing for less forceful, faster, smoother shifting. As soon as the pedal passes neutral, the height of the Q-Ring increases, and thus presents the greatest leverage at the moment when your muscles can deliver their maximum power.

Oval chainrings tried to make their way in a few years ago, and were widely criticized, but don't be fooled: the Rotor concept is the exact opposite of its ovoid ancestors. Indeed, while the old ovoid chainrings offered the maximum leverage at neutral (this concept was supposed to offer a greater regularity of pedaling but only increased the stress on the muscles), the Q-Rings crowns are ""intelligent"" and muscularly ergonomic: they respect the variations of the body's power, the more power you can deliver, the more the Q-Rings allow you to.

The results have already c...