UNO Electronic Rear Derailleur

Genuine spare part for the ROTOR UNO Electronic Wireless Groupset. The UNO Rear Derailleur is available in two versions, Gravel and MTB, sharing the same electronics and wireless architecture, with the key difference being the pulley cage size to match your discipline:

• UNO Gravel Rear Derailleur: 75mm pulley cage, optimised for the lower chain wrap demands of gravel drivetrains and mixed-terrain riding.
• UNO MTB Rear Derailleur: 93mm pulley cage, designed to handle the wider gear range and greater chain wrap required by mountain bike drivetrains.

Select your version above to ensure full compatibility with your ROTOR UNO setup.