Ultegra Di2 RD-R8050 Size:GS 3D DAT for natural foot

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

16mm hardened MAX-PERFORMANCE STEEL SHACKLE

Evidence of this balancing act comes in the fact that they rate a six on the stiffness index that runs up to twelve

SPECIFICATIONS

1 mm relatively strong sponge provides optimal power for fast moves

Ultegra Di2 RD-R8050 Size:GS 3D DAT for natural footThe 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)