Product Description

• The advantages of Di2 (Digital Integrated Intelligence) are clear for everybody who has tested it: changing gears becomes easier, effortless and faster by simply touching the shift buttons. Control at the top of your fingers. Additional benefits include an automatic trimming front derailleur, unmatched precision plus super easy installation and adjustment.

• Shimano
  If installing the front derailleur to a brazed-on type frame, a protector must be attached to the seat tube. Always be sure to install the protector in order to prevent damage to the frame from the pressure applied by the support bolt of the front derailleur.