Ultegra Di2 RD-R8050 Butterfly Anti-fog | UV sun protection

Anti-fog | UV sun protection

Embedded in the tire construction the Active Comfort Technology absorbs vibrations and smoothens your ride

It's as simple as that

Streamlined Plush Terry Wipe Surface For Removing Excess Sweat

Ultegra Di2 RD-R8050 Butterfly Anti-fog | UV sun protectionThe new Ultegra Di2 derailleur now gets all the great design features from Dura Ace. Shimano Shadow Get a wide gear compatibility RD SS covers: 11 25T to 11 30T RD GS covers: 11 28T to 11 34T Maintain race concentration with more intuitive shift control System communication with front derailleur SHIMANO Synchronized Shift Specifications Specifications Manufacturer Warranty 2 years Position Rear Transmission Type Electronic Weight 242g (SS), 249g (GS)