Shimano DURA-ACE Di2 Rear Derailleur SHIMANO SHADOW RD 12-speed webbbs the ST Rotation 14 has

the ST Rotation 14 has a DIN adjustment from 7-14 for those that like to turn it up past “11”

With a weight of 1520g and PU shell and cuff material

Also fits: TRP Quadiem

Weighing an ultralight 96 grams (without the brake)

Shimano DURA-ACE Di2 Rear Derailleur SHIMANO SHADOW RD 12-speed webbbs the ST Rotation 14 hasOur fastest ever shifting across SHIMANO's widest ever DURA ACE gear range, the RD R9250 is capable of both race wins and personal bests. The DURA ACE RD R9250 integrates the system charging port and a wireless connectivity unit all while delivering super fast, precise shifting worth of any podium. A single cage length that is compatible with 28 34T low sprockets brings new versatility to the world's best road component group. FEATURES Our fastest