Item number: 51458
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Shimano Dura-Ace BR-R9170 Disc Brake Set with ST-R9170 Di2 - a new level in braking control

The Shimano Dura-Ace BR-R9170 disc brake set (VR+HR) with Di2 ST-R9170 shift/brake levers is a finely-tuned hydraulic-electric system for road biking applications, and raises braking safety to a new level. The flat mount brake calipers with ceramic pistons are sure to impress with integrated road bike characteristics, with one-way bleeding and highly reliable brake performance using Ice-Tech heat dissipation. The Dual Control Di2 lever offers a distinctive " click" mechanism for fast and intuitive shifting, and stands out with its ergonomic grip humps. The E-Tube Platform also unlocks countless customisation options.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of used batteries and electrical equipment can be found here.


Dura-Ace R9100
Road, Cyclocross
2-speed, 11-speed
Shifting System:
hydraulic, 2 pistons
mineral oil
Hose Length (Front/Rear):
1000 mm/1700 mm

Technical Information - Shift/Brake Lever:

Brake Lever Material:
Lever Body Material:
carbon (CFRP)
clamp (closed)
Reach Adjust:
Adjustment Options:
reach adjust, contact point

Technical Information - Caliper:

Caliper Mount:
flat mount
resin with cooling fins
Calliper Material:
Piston Material:
Hose Connection:


Shift/Brake Lever:
Mounting Position:
left for front brake caliper, right for rear brake caliper
Clamp Diameter:
23.8 - 24.2 mm
Power Cable:
EW-SD50 (2 x connection)
Front Derailleur:
FD-R9150, FD-R8050, FD-9070, FD-6870, FD-RX815
FC-R9100, FC-R9100-P, FC-R8000, FC-R7000, FC-RS510, FC-9000, FC-6800, FC-5800, FC-RS500, FC-U5000-2, FC-RX810-2, FC-RX600-11
Rear Derailleur:
RD-R9150, RD-R8050, RD-9070, RD-6870, RD-RX805, RD-RX815, RD-RX817
CS-R9100, CS-9000, CS-6800, CS-5800, CS-R8000, CS-HG800-11, CS-R7000, CS-HG700-11, CS-M8000-11, CS-M7000-11, CS-M5100-11
CN-9000, CN-6800, CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500
Additional Brake Lever:

Brake Caliper:
Brake Rotor:
140 mm, 160 mm, 180 mm* (recommended: SM-RT900)
organic and sintered; with narrow pad shape; standard and Ice Tech brake pads

* front only


  • hydraulic brake system optimally tuned for racing use
  • wide brake pad spacing and chamfered brake pads
  • optimised heat dissipation
  • powerful integrated braking performance, flat caliper design
  • ceramic piston
  • brake caliper anodised, bolt made of steel (4 mm)
  • more intuitive, faster shifting: clearer click feeling and ergonomic shift lever position
  • function adaptable to every riding style: Multi-Shift can be switched on or off separately for each shifter
  • ideal ergonomic and softer rubber grip with improved strength
  • programmable gearing
  • multiple input: hold
  • E-Tube project ensures firmware updates
  • funnel venting with M7 funnel
  • CFRP shifter and master cylinder, painted brake lever


STI Dual Control
Shimano Total Integration (STI) means the combination of braking and shifting functions in one lever, which increases safety when riding. By refining the technology, it became possible to make shifting so smooth at the front and rear that they can be triggered with just one finger. Shimano calls such levers Dual Control Levers (DCL).

Digital Integrated Intelligence (Di2)
Di2 systems are the electronic shifting systems from Shimano. They are based on the SEIS, the Shimano Electronic Intelligent System, which takes over the index shifting function from the mechanical components, only via power cables or radio signals and not via a Bowden cable. Shifting is done by simply pressing a button. This has the advantage that no great effort is required, your concentration on the ride is not disturbed and operation is easy even with cold hands. In addition, the electronic gear changes are very fast and highly precise. There is also no risk of a defective circuit due to dirty cables or other problems. You can adjust individual settings via the E-Tube Project, such as adjusting the shifting speed, the number of shifting operations per button press or the Synchro or Semi-Synchro shifting function. Shimano offers an app for this purpose. Gear maintenance and firmware updates are also done via E-Tube, with the bike connected to a PC running the appropriate E-Tube software for more extensive workshop work.

One Way Bleeding
One Way Bleeding is a technique used on Shimano calipers that facilitates brake bleeding. The hose routing has been optimised so that no air bubbles remain in the brake calliper. In combination with the funnel, the brake can be bled cleanly and easily.

Manufacturer Number:

I-R9170DLF4SA10A + I-R9170DRRDSA17A


  • 2 x Shimano Dura-Ace BR-R9170 + Di2 ST-R9170 disc brakes, front and rear
  • 1 x Shimano SM-BH90-JK-SS brake hose, 1000 mm (front)
  • 1 x Shimano SM-BH90-JK-SS brake hose, 1700 mm (rear)
  • 2 x pairs Shimano brake pads
  • 1 x disc brake adapter for front 140/160 + 160/180 mm
  • 2 x hose connection set w/ olives and pins
  • 2 x type A caliper bolts (front)
  • 2 x caliper bolts for 25 mm frame diameters (rear)
  • 1 x Shimano TL-EW02 plug tool
  • ready for installation, filled, bleeding is recommended after installation

Order Together:

Optional Accessories:
  • organic brake pads K03Ti without cooling fins
  • sintered brake pads L04C with cooling fins
  • sintered brake pads K04Ti without cooling fins


  • black/set (front+rear): 615 g (Satz)


  • black/set (front+rear), out of stock

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