Disc brake lever/rear derailleur kit for ULTEGRA Di2 12V range and rear brake caliper. Includes:
The ergonomic, dual-control ULTEGRA ST-R8170 shifter brings new levels of comfort and control to road cycling. With the fastest wireless shifting on the market.
The Di2 platform, used on DURA-ACE and ULTEGRA models, frees up gear shifting while offering faster, more reliable wireless shifting.
The ULTEGRA R8170 disc brake caliper brings a new level of control to the world of road cycling, with improved modulation and a faster initial braking point.
With improved modulation, a quieter braking system and an easier-than-ever bleeding process.
Approx. caliper weight: 123 grs. Joystick weight approx: 196 grs.