Shimano BR-R9170 + Di2 ST-R9170 Dura Ace Disc Brake Set

Item number: 51458

excl. shipping cost
to the delivery destination: USA

black/set (front+rear)
2 to 7 days

Delivery to USA is not possible.

Shimano BR-R9170 + Di2 ST-R9170 Dura Ace Disc Brake Set - black/set (front+rear)
Shimano BR-R9170 + Di2 ST-R9170 Dura Ace Disc Brake Set - black/set (front+rear)
  • 100 day return period
  • CO2 neutral shipping with DHL
  • Trusted Shop 4.89 / 5.00

There was never more braking performance: the Dura Ace BR-R9170 disc brake by Shimano

A completely new level of reliability and braking performance is achieved with Dura Ace disc brakes. Even under challenging weather conditions, the rider can set maximum trust in braking performance. Thanks to the flat mount construction, the BR-R9170 hydraulic disc brake caliper is mounted direct to the frame, giving it a flat profile and higher efficiency. The heat dissipation is greatly improved and this gives the rider stable braking performance throughout the entire ride.


Application: Road, Cyclocross
Brake Type: disc brake, hydraulic
Mount: flat mount
Hydraulic Fluid: Shimano mineral oil
Hose Length: 1000 mm (front) / 1700 mm (rear)

Technical Inforamtion - Lever:

Shift Lever Material: GFRP
Brake Lever Material: aluminium, painted
Body Material: aluminium, painted
Main Cylinder Material: aluminium
Gearing: 2-speed, 11-speed (programmable)
Type: dual control (STI)
Shift Lever: Di2 (electronic)
Brake Lever: hydraulic
Multi-Shift: hold
Compatible Derailleur: road 11-speed
Handlebar Diameter: 23.8 – 24.2 mm
Reach Adjust: yes (tools required)
Contact Point Adjust: yes
Brake Hose: SM-BH90-JK-SS
Hose Connection: straight
Bleeding Tool: funnel (with adapter Y-0C698050 for ST-R9170)
Number of E-Tube Connections: 0
Number of E-Tube Ports 2
Number of Sprinter Shifter Ports: 0
Technology: Servo Wave, E-Tube

Technical Information - Caliper:

Material: aluminium, painted, steel bolts (4 mm)
Construction: 2-piece
Brake Pistons: 2 pistons (ceramic)
Brake Pads: L02A resin with cooling fins
Recommended Rotor: SM-RT900 (front 140/160 mm, HR 140 mm (160 mm optionally with adapter))
One Way Bleeding: yes
Technology: Ice-Tech


Servo Wave
When you pull a servo wave brake lever initial pad travel is fast, so little lever movement is needed to bring the pads into contact with the rotor. The power multiplication factor then increases rapidly at the pad-to-rim contact so more of the lever stroke is used to apply greater braking power with improved control.

E-tube is a system platform in order to achieve the Di2 (Digital Integrated Intelligence) concept. E-tube transmits interactive signals and power supply to each electronic component by “plug & play connection. E-tube is a no rust, no stretch, no freeze system and it ensures advanced low maintenance. E-tube project offers, besides customized setting of the electronic components, an update to firmware via Windows PC, tablet or smartphone. You have access to a range of options for a quick check of the electronic components or the system status.

One Way Bleeding
One way bleeding was developed for quick and easy prevention of air in Shimano’s hydraulic system. Shimano has streamlined the oil route throughout the system to prevent air bubbles from being captured in the system. One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

The fade, which can occur to rotor and pad when braking on a long downhill ride for instance, has a negative impact on the braking performance. Shimano has adopted Ice Technology rotors and Ice Technology pads to realize the cooling technology for consistent performance. The rotor blade, which has a 3 layer-sandwich structure of stainless steel, aluminium and stainless steel, provides better radiation performance achieving from 400 °C to 300°C surface temperature. Also, the radiation fin has been adopted for the pad. Moreover, the rotor blade and the radiator fin provide long pad life, less noise, less fade and are lightweight.
XTR, Saint, Deore XT, SLX, Zee, Deore LX calipers are bundled with Ice Technology pistons in order to achieve optimized lightweight, high rigidity and heat dissipation. Oversized pistons transfer hydraulic power directly to the brake pad, and ceramic material is used to avoid heat transfer for constant stable braking, providing efficient stopping power transfer without loss.

Factory Numbers:

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 1000 mm front brake hose
- 1 x Shimano SM-BH90-JK-SS 1700 mm rear brake hose
- 2 pairs of Shimano L02A brake pads
- 1 x adapter for a 140/160 mm rotor (front only)
- 2 hose connecting bolt units
- 2 x type A caliper bolts (front only)
- 2 x caliper bolts for 25 mm frame diameter (rear only)
- 1 x Shimano TL-EW02 wiring plug tool
- incl. Shimano TL-BH61 assembly tool
- bolts for 10/15/20/30/35 mm frame diameter not included
- rotor not included


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


in stock 2 to 7 days up to 10 days up to 20 days
  • black/set (front+rear)

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