Description
Shimano Dura-Ace Di2 12s Electronic Drivetrain and Brake Component Bundle
This Shimano Dura-Ace Di2 component bundle combines core elements of Shimano’s
flagship electronic 12-speed drivetrain together with hydraulic disc braking
technology designed for professional road cycling performance.
The configuration includes the wireless-integrated Di2 derailleurs, hydraulic
ST-R9270 brake and shift levers, flat mount disc brake calipers and internal
battery system. Additional components such as the CN-M9100 chain, IceTech
RT-MT900 rotor and Di2 wiring ensure reliable operation, precise electronic
shifting and powerful braking in demanding riding conditions.
Key Features
- Shimano Dura-Ace Di2 12-speed electronic shifting system
- Hydraulic disc brake system with ST-R9270 shift/brake levers
- Flat mount BR-R9270 hydraulic brake calipers
- Wireless-integrated rear derailleur RD-R9250A supporting up to 34T cassette
- FD-R9250 front derailleur for 2×12 road drivetrain systems
- Shimano IceTech RT-MT900SE rotor for improved heat management
- CN-M9100 12-speed chain compatible with road and MTB drivetrains
- Internal Di2 lithium-ion battery BT-DN300
- EW-SD300 internal Di2 wiring for system connectivity
- EW-EC300 charging cable for Di2 battery system
- Professional-grade braking modulation and shifting precision
Technical Specifications
| Brand | Shimano |
| Groupset Platform | Dura-Ace Di2 |
| Speed | 12 Speed |
| Rear Derailleur | RD-R9250A Di2 (max cassette 34T) |
| Front Derailleur | FD-R9250F Di2 (braze-on) |
| Shift / Brake Levers | ST-R9270 hydraulic Di2 |
| Brake Calipers | BR-R9270 flat mount hydraulic disc |
| Brake Rotor | RT-MT900SE IceTech Centerlock 160 mm |
| Chain | CN-M9100 12-speed chain (116 links) |
| Battery | BT-DN300 internal Di2 lithium-ion battery |
| Di2 Wiring | EW-SD300 internal cables (1200 mm / 600 mm) |
| Charging Cable | EW-EC300 Di2 charging cable |
| Compatibility | Road performance bikes with Shimano 12s Di2 drivetrain |
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