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Drivetrain >> Chainrings - MTB

Rotor QRings

Rotor QRings

Q-rings make your spin cycle smoother, make climbing easier on the legs and helps reduce the build up of lactates during hard efforts. Pros tell us they are great for stage racing and blocks of training.

Rotor Q-Rings minimize the dead spots like reducing the size of a regular chainring, and give you more time during the pedal down stroke. This allows for a lower physical demand on your body, so you are able to ride longer with less fatigue, climb easier...


Rotor Q-Rings do not eliminate the dead-spot (as do Rotor Cranks) but help to reduce its negative effects,moving the legs easier through the dead spot imitating a smaller circular chainring, and enabling the legs to remain in the power stroke for a longer period of time when compared to round chainrings. Q-Rings change the equivalent tooth size by decreasing it before the dead-spots and increasing it when the rider is in the power mode (when more power is available at the pedal down stroke).

A 53T Q-Ring, around the upper dead-spot is equivalent to a 51T, but as the pedal goes down and more strength is applied (just passed the maximum power moment), the equivalent chainring tooth size reaches 56T.


OCP (Optimum Chainring Position), a Rotor patented feature is the secret to success, where others have failed. The OCP system allows you to choose the angle where you obtain the maximum gear ratio, customizing pedaling to each and every cyclist, where it is needed most. Since the maximum power moment is different for every cyclist (performance is different depending on pedaling style and position on the bike), the OCP System customizes the Rotor Q-Rings to your geometry and cycling habits, and takes maximum advantage of alternative leg inertias on every pedal rotation. OCP is Rotor Q-Ring's bio-mechanical key!

More uniform power delivery due to the modulation of the gear ratio every moment. Rotor Q-Rings are designed to obtain a soft, comfortable way of pedaling with uniform muscular work, so they allow an easy and quick adaptation. Rotor Q-Rings give a smoother power transfer, helping to maintain traction on slippery surfaces, and to avoid the bobbing effect on suspension bikes.

Mitigation of knee pains: Since Q-Rings imitate a circular (but smaller) chainring around the dead spots, minimize muscle requirements at the dead- spots, just when your knees need it.


Lightweight & Quality: CNC machined from the highest quality aluminium, with a special nickel plated finish for extreme wear resistance.

Latest technology with simplest mechanics: Q-Rings are user friendly; easy to install and easy to find and change the regulation setting through the patented OCP System. Affordable: prices are within the reach of every cyclist.

Designed and patented by ROTOR: Innovation and performance through our engineering at the service of the cycling community. Fits most high-end bikes: Q-Rings are available for:

  • Shimano and other cranks using the 130 BCD (bolt pattern)
  • Campagnolo and other cranks using 135 BCD
  • FSA and other Compact cranks using 110 BCD (not valid for Campagnolo Compact)
  • MTB cranks using 104/64 BCD (Shimano XT and similar)
  • SRAM XX cranksets using 120 and 80 BCD

It is recommended that you download and read this 'guide to adaptation' before preceeding to buy Q-rings.


Price Stock

104bcd, 33T

     GBP56.00   GBP50.40 

    104bcd, 38T

       GBP85.00   GBP76.50 

      120bcd, 38T

         GBP97.00   GBP87.30 

        64bcd, 25T

           GBP37.00   GBP33.30 

          80bcd, 26T

             GBP66.00   GBP59.40 

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