What do Rotor Cranks do? Rotor Cranks work by slightly increasing the force required on the drive side crankarm during the pedal downstroke, using this energy to propel the non-drive crank are past the 12 o'clock point ... also known as the dead spot. This happens ...

ROTOR Q-Rings were designed to emulate the gear variations of Rotor cranks in the power stroke. They do not eliminate dead spots as do ROTOR Cranks, but reduce their negative effects by moving the legs through these zones faster, enabling the cyclist to generate more...

DURA-ACE 7800 Hollowtech II crank and bottom bracket combines race-proven hollow forging technology with the integrated crankset & bottom bracket. Weight is reduced while rigidity & power transfer is radically increased. In addition to Hollowtech II integrated ...

Singlespeed / Downhill Q-Rings

DURA-ACE 7800 Hollowtech II crank and bottom bracket combines race-proven hollow forging technology with the integrated crankset & bottom bracket. Weight is reduced while rigidity & power transfer is radically increased. In addition to Hollowtech II integrated ...

ROTOR Q-Rings were designed to emulate the gear variations of Rotor cranks in the power stroke. They do not eliminate dead spots as do ROTOR Cranks, but reduce their negative effects by moving the legs through these zones faster, enabling the cyclist to generate more...

Rotor Cranks work by slightly increasing the force required on the drive side crankarm during the pedal downstroke, using this energy to propel the non-drive crank are past the 12 o'clock point ... also known as the dead spot. This happens 180 times a minute in a 90R...

Extra large TT rings