With smaller, sleeker hoods, the 2 x 11-speed compatible Di2 ST-R9170 STI with BR-R9170 caliper for hydraulic disc brake units deliver improved ergonomics for better rider comfort and control, with reduced lever stroke and lighter action (no box packaging).
Most advanced component group of all time: The Shimano Dura Ace Di2 2×11-speed ST-R9170 + BR-R9170 Disc Brake Set
Engineered for the next generation of race bike, DURA-ACE R9100 offers top-tier performance across numerous configurations. Available with either Di2 electronic or mechanical shifting, for the first time, riders now have the option of premium DURA-ACE hydraulic disc brake performance. New Shimano technologies further integrate the DURA-ACE as a system, including a new power meter, while riders further integrate with their bike through new E-Tube wireless connectivity. Shimano’s Rider Tuned philosophy and customization of the bicycle’s function also expands with a wider range drivetrain that now includes intuitive Shimano Synchro Shift control.
Features – Shimano DURA ACE Di2 ST-R9170+BR-R9170 2×11-speed Disc Brake Set
- More control and confidence in race conditions
- Optimally balanced hydraulic brake system for racing
- Dedicated brake lever shape, stroke, contact point, stiffness and dedicated shift paddles
- Light weight
- Carbon composite plastic material of hood
- More intuitive, quicker shifting operation
- More defined click feeling and ergonomic shift lever position
- Customizable function to fit any riding style
- Each switch has the option for multi-shift ON or OFF
- E-TUBE project
- Optimum power transmitted with grip firmly
- Ideal ergonomic cover shape with better thickness & tenderness
- Openable hood cover
- Simple set up and maintenance
- Easy replace hood cover
- Openable hood cover
- Customizable the function to fit in rider’s riding style
- Consistent braking performance under all weather conditions
- Fast and easy bleeding through one-way Bleeding
- Front (140/160mm) / rear (140mm)
Product features
- Use: Road/Cyclocross
- Group: Dura Ace Di2
- Model: ST-R9170 Set
- Type: Dual-Control (STI)
- Handlebar mounting: left / right
- Gear front: 2-speed
- Gear rear: 11-speed
- Optical gear display: No
- Lever reach adjust: Yes
- Handlebar diameter: 23.8mm/24.2mm
- Brake-type: Hydraulic Disc Brake
- Brake caliper: BR-R9170
- Brake mounting: Flat-Mount
- Brake pads: L02A Resin with Fin
- Brake hose: SM-BH90-JK-SSR front 1000mm / rear 1700mm (shortable)
- One-Way bleeding: Yes
- Brake fluid: Mineral oil
- Recommended brake rotor: SM-RT900 (140mm/160mm)
- Compatible: EW-SD50
- Master unit: No
- Firmware update by E-tube Project: Yes
- E-tube port (pcs): each 2
- E-tube connector (pcs): 0
- Port for remote sprinter shifter (pcs): 0
Material
- Body: CFRP
- Lever: Carbon, painted
- Caliper: Aluminum, painted
Weight
- approx 640g / pair (without rotors)
Scope of delivery
- 1 x Dura Ace Di2 2×11-speed Di2 STI Dual Control ST-R9170 Set
- 2 x Dura Ace Disc Brake Caliper BR-R9170 Flat-Mount
- 1 x Flat-Mount Adapter 140mm/160mm
- 2 x Brake Pads L02A-Resin with Fin
- 2 x Brake Hose SM-BH90-JK-SSR 1000mm / 1700mm (shortable)
- 4 x Screw for brake caliper (for rear 2 x 30mm)
- 2 x Tube Joint Kit (Olive in the brake lever and the pin already installed in the line)
- The brake hoses SM-BH90-JK-SSR are with mineraloil filled and pre-mountedon the calipers BR-R9170! (no box packaging)
Disc Rotors SM-RT900 Center Lock not included!
For suitable Rotors >CLICK HERE
Technology
SEIS SHIMANO ELECTRONIC INTELLIGENT SYSTEM
- Full SHIMANO Synchronized Shift: the front derailleur reacts based on the rear derailleur’s shift action. This essentially means that, when activated, there is no need for two separate shifters to control front and rear derailleurs, the two buttons on one shifter will control both derailleurs.
- Semi SHIMANO Synchronized Shift mode: the rear derailleur reacts based on the front derailleur’s shift action, shifting to the next most appropriate rear gear when the rider makes a front shift.














Reviews
There are no reviews yet.