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![Shimano Dura-Ace BR-R9270 / Di2 ST-R9270 Disc-Brake FW Flatmount](https://www.actionsports.de/media/image/b3/53/b5/image_BR_SH_0181_1_600x600.jpg)
- Order number: BR.SH.0181
- HerstellerID: IR9270DLF6SC100E
- EAN: 4550170889722
The disc brake for the Dura-Ace road bike top group from Shimano consists of BR-R9270 and... more
Product information "Shimano Dura-Ace BR-R9270 / Di2 ST-R9270 Disc-Brake FW Flatmount"
The disc brake for the Dura-Ace road bike top group from Shimano consists of BR-R9270 and ST-R9270. These are a flat-mount brake caliper for the front or rear and an electronic shift/brake lever that can be used for wireless 2-speed or 12-speed shifting and hydraulic braking.
The BR-R9270 brake caliper was designed as a one-piece mono-body construction. Compared to the Ultegra variant, this saves over 20 grams in weight at the front and rear and also increases rigidity. The brake pads have more clearance than on the previous model, which avoids grinding of the brake disc and reduces noise. The braking power of the two plastic pistons is designed for use in competitions. The BR-R9270 also scores with a simple venting process thanks to one-way bleeding technology.
In the master unit, both the brake lever and the grip body are made of carbon, which saves around 20 grams on each side compared to the Ultegra model. ST-R9270 is powered by a CR1632 button cell battery, which lasts at least 1.5 years and can be replaced by yourself. It communicates with the rear derailleur via a wireless protocol, which in turn is wired to the battery and indirectly to the front derailleur
Technical data
Series: Dura Ace R9200
Area of use: Road, Triathlon & Time Trial
Switching levels: 2x, 12x
Shifting system: electronic, semi-wireless
Brake type: hydraulic, 2-piston
Brake medium: mineral oil
Cable: SM-BH90-JK-SSR
Line length front/rear: 1000 mm
Material brake lever: carbon (CFRP)
Material grip body: carbon (CFRP)
Mounting: clamp (closed)
Reach Adjustment: Screw
Adjustment options: Reach adjustment, pressure point adjustment
caliper
Mounting: flat mount
Brake Pad: L03A Resin with cooling fins
Construction: mono body
Material caliper: aluminum
Material piston: resin
Line connection: straight
compatibility
Mounting position: left for front brake calliper, right for rear brake calliper
Clamp diameter: 23.8 - 24.2 mm
Power cable: EW-SD300-I (1 x connector)
Rear Derailleur: RD-R9250, RD-R8150
Front derailleur: FD-R9250, FD-R8150
Crank: FC-R9200, FC-R9200-P, FC-R8100, FC-R8100-P
Cassette: CS-R9200-12, CS-R8100-12
Chain: CN-M9100, CN-M8100, CN-M7100, CN-M6100
Additional brake lever: BL-RX812
Satellite switch: SW-RS801-S, SW-RS801-T (1 x connection via EW-SD300)
scope of delivery
1x front wheel brake with shift/brake unit Dura Ace Di2
including brake pads, filled and bled
1x disc brake adapter (front wheel only)
Link to manufacturer: https://bike.shimano.com/
Delivery only within EU and EFTA countries
Delivery only within EU and EFTA countries
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