Shimano Dura Ace BR-R9170 + Di2 ST-R9170 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 Dura Ace BR-R9170 + Di2 ST-R9170 Disc Brake Set - black/set (front+rear)
Shimano Dura Ace BR-R9170 + Di2 ST-R9170 Disc Brake Set - black/set (front+rear)
  • 100 day return period
  • Online since 1998
  • Trusted Shop 4.89 / 5.00

Shimano Dura Ace BR-R9170 disc brake set with ST-R9170 Di2 - new brake control level

The Shimano Dura Ace BR-R9170 disc brake set (front + rear) with the Di2 shift/brake levers ST-R9170 is a hydraulic-electronic system tuned for Road bike use and raises brake safety in this area to a new level. The flat mount brake calipers with ceramic pistons are convincing due to their integrated Road bike look, One Way Bleeding and especially to their reliable brake performance with Ice-Tech heat dissipation. The Dual Control Di2 levers offer a clear click feel for fast, intuitive shifting and are characterised by their ergonomic grip humps. At the same time, they open up a high degree of individualization via the E-Tube system platform.


Series: Dura Ace R9100
Application: Road, Cyclocross
Gearing: 2x, 11-speed
Shifting System: electronic
Type: hydraulic, 2 pistons
Actuation: mineral oil
Hose: SM-BH90-JK-SS
Hose Length (Front/Rear): 1000 mm / 1700 mm

Technical Information - Shift/Brake Lever:

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

Technical Information - Caliper:

Mount: flat mount
Pistons: 2
Pads: L02A resin with cooling fins (L03A resin, K02Ti / K03Ti resin, K04Ti metal, L04C metal optional)
Design: 2-piece
Caliper Material: aluminium
Hose Connection: straight


- 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
- recommended brake rotor: SM-RT900 (front140/160 mm, rear 140 mm (160 mm optional with adapter))
- 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
- compatible with 11-speed Road rear derailleurs
- E-Tube project ensures firmware updates
- number of E-Tube ports: 2
- funnel bleeding (with adapter Y-0C698050 for ST-R9170)
- CFRP shifter and master cylinder, painted brake lever
- for 23.8 - 24.2 mm handlebar diameter


STI Dual Control (DCL)
DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation. Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift internals borrow the robustness from Shimano's MTB technology and are so smooth and effortless that one finger shifts front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration, and simply has to be experienced to be understood.

A technological innovation of the computerized shifting system based on the DI2 concept with which is called, the SEIS (Shimano Electronic Intelligent System). The SEIS innovative shift technology is still based on the Shimano Index System (SIS) that has proved its superior gear changing characteristics over the years. The big difference is that in this case, the shifting action is provided for by electronics instead of mechanics. Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding instead on shifting. The shift system allows accurate and effortless shifting in difficult circumstances for example when you have cold hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons work similarly to mechanical Dual Control Lever so you don't need to re-program your mind for the SEIS.

The E-Tube platform's " Plug & play" and wireless connections make it easier than ever to check and adjust DI2 components on your PC, tablet, or smartphone. The E-Tube project's cutting edge features are protected with an advanced all-weather design that resists rusting, stretching, and freezing. It provides optimal flexibility for your bike. The E-Tube project lets you customise settings of compatible electrical components, update to the latest firmware for feature improvements on Windows PC, tablet or smartphone, quickly access important components' data, and instantly check the system's status.

One-Way-Bleeding was developed for quick and easy prevention of air in Shimano's hydraulic system. They have 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.

Brake fading during prolonged uninterrupted operation, e.g. downhill, impairs braking performance. Shimano has introduced brake discs and pads with Ice-Tech technology to create a cooling technology for consistently high braking performance. The brake rotor has a three-layer stainless steel sandwich structure on the outside around an aluminium core. It radiates heat better and reduces a surface temperature from 400° C to 300° C, for example. The brake pads also have optional cooling fins. The design of the rotor in combination with the cooling fins results in a longer service life of the pads, less braking noise, less fading and a lower weight.

Factory 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 pairs of Shimano L02A brake pads
- 1 x adapter for 140/ 160 mm rotors (front)
- 2 x hose connecting bolt units
- 2 x type A caliper bolts (front)
- 2 x caliper bolts for 25 mm frame diameters (rear)
- 1 x Shimano TL-EW02 plug tool
- incl. Shimano TL-BH61 tool
not incl. bolts for 10/15/20/30/35 mm frame diameters
- not incl. rotor
- mount ready (filled & bled)


-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)

Rate this product

Be the first and leave your opinion!

You have questions regarding a product?

+49 2405.450045 +49 2405.450045

Customer Reviews

no reviews yet

Your opinion counts!

Be the first and leave a comment!

This may also be interesting for you