The crown is at its lowest point when the dead centre is reached, allowing you to pass through it with less force, more quickly and more smoothly. As soon as the pedal passes the dead centre, the height of the Q-Ring increases, providing the greatest leverage at the moment when your muscles can deliver maximum power.Oval chainrings already tried to make their way onto the market a few years ago and were widely criticised, but don't be fooled: the Rotor concept is the exact opposite of its oval predecessors. While the old oval chainrings offered maximum leverage at dead centre (this concept was supposed to provide greater pedalling consistency but only increased muscle stress), Q-Rings are "intelligent" and ergonomically designed for the muscles: they respect the body's power variations; the more power you can deliver, the more the Q-Rings allow you to do so. The results have already convinced many cyclists: more natural pedalling, less fatigue at the end of the race, less muscle trauma. Try them for yourself...lt;br />
Rotor Try Q offer: Satisfaction guaranteed or your money back for 30 days*.

Technical specifications: - Compatible with all Shimano-type 110 mm 5-arm cranksets- Not compatible with Campagnolo, Fulcrum and Shimano 6700, 6800, 7900, 9100 cranksets...
- Colour: black
- 34, 36, 38, 39 or 42 teeth
- Brand: Rotor

*Offer valid for up to 30 days after purchase, only on the Rotor Qrings and QXL chainring range. If you are not satisfied, you will be refunded in the form of a credit note on your customer account.