Ultegra Di2 RD-R8050 Size:GS ready to roar

ready to roar

Simply connect the trainer to the rear wheel of your bike

DURA-ACE 9000 Series

16mm hardened MAX-PERFORMANCE STEEL SHACKLE

3D DAT for natural foot guidance - dynamic arch technology made from silver Nylon 6 composite

Ultegra Di2 RD-R8050 Size:GS ready to roarThe 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)