Hydraulic disc brake set consisting of ST-R9170 shift and brake levers as well as BR-R9170 hydraulic Flat Mount disc brakes. Dura Ace Di2 Series.
Dura Ace Di2 ST-R9170 STI
The hydraulic Di2 ST-R9170 Dual Control levers feature a refined hood shape with svelte shared ergonomics for more rider control in race conditions, which is expanded by an optimally balanced hydraulic brake system. The ergonomically-enhanced Di2 shift levers produce a more defined shift click for a more intuitive feel and quicker shifting operation and expanded E-Tube customization allows every switch the option to independently turn on or off multi-shift. Thanks to the customizable function the levers fit any riding style and the carbon composite plastic hood material drops the weight of the whole construction.
Dura Ace BR-R9170 Hydraulic Flat Mount Disc Brake Caliper
The all-new DURA-ACE hydraulic disc brake caliper was redesigned for the highest level of road performance. Utilizing a lightweight and minimalistic Flat Mount design, the R9170 caliper features stopping power ideally tuned for road applications. The new RT900 rotor offers even greater heat management capability than Shimano’s SM-RT99 industry-leading ICE TECHNOLOGIES FREEZA rotors, resulting in unparalleled braking performance and reliability in the most demanding conditions.
Note: In order to ensure proper functioning of the electronic Di2 drive system, all components need the same firmware version. The optional diagnostic device allows for reading out or updating the firmware version. An operation of components with different firmware versions may cause a malfunction or loss of function.
Included in delivery: Dura Ace Di2 Flat Mount disc brake, filled and bleed:
right ST-9170 dual control lever
hydraulic BR-R9170 Flat Mount caliper
SM-BH90 brake hose 1700 mm
L02A brake pads with cooling fins
Material: shifting lever: carbon
body and brake lever: aluminum
shifter lever body: glass fiber reinforced plastic (GFRP)