The ST-R8150 electronic shift/brake levers from Shimano's Ultegra Di2 road bike groupset shift 12-speed or 2-speed by cable and brake mechanically. It scores with fast gear changes that are defined and intuitive thanks to the Shimano index shifting system. Cables are routed from the STIs first to a junction box and then to the battery, which in turn is connected to the rear derailleur and front derailleur. You can also connect the STIs to each other and run a cable from the right shifter to the battery. The ergonomics of the dual-control levers and the horns have been further optimized compared to previous models, and allow for a very comfortable grip. You can easily adjust the grip width with a flat head screwdriver. The brake levers are made of lightweight aluminum, the grip bodies of plastic, which saves additional weight.
Application: Road
Gearing: 2-speed, 12-speed
Shifting System: electronic
Brake Type: mechanical
Lever Body Material: composite (GFRP)
Mount: clamp (closed)
Reach Adjust: bolt
Adjustment Options: reach adjust
Power cable: EW-SD300-I (2 x connection)
Rear Derailleur: RD-R8150, RD-R9250
Front Derailleur: FD-R8150, FD-R9250
Crankset: FC-R8100, FC-R8100-P, FC-R9200, FC-R9200-P
Cassette: CS-R8100-12, CS-R9200-12
Chain: CN-M8100, CN-M9100, CN-M7100, CN-M6100
Rim Brake: BR-R8100, BR-R8110, BR-RS811-R, BR-R8000, BR-R8010, BR-6800, BR-6810, BR-6700, BR-R9200, BR-R9210, BR-R9100, BR-R9110, BR-9000, BR-9010, BR-7900, BR-R7000, BR-R7010, BR-5800, BR-5810, BR-5710, BR-5700, BR-4700, BR-4600, BR-R3000, BR-3500, BR-R561, BR-R2000, BR-CX70, BR-CX50, BR-CX77, BR-R517,BR-R317, BR-RS305, BR-R650*, BR-R451*, BR-R450*, BR-R550*
Satellite Shifter: SW-RS801-S, SW-RS801-T (1 x connection via EW-SD300)
* with reduced braking force
- cone shape and surface structure provide optimum grip and braking force transfer
- firmware updates via E-Tube Project
- lacquered brake lever
Shimano Total Integration (STI) means the combination of braking and shifting functions in one lever, which increases safety when riding. By refining the technology, it became possible to make shifting so smooth at the front and rear that they can be triggered with just one finger. Shimano calls such levers Dual Control Levers (DCL).
Digital Integrated Intelligence (Di2)
Di2 systems are the electronic shifting systems from Shimano. They are based on the SEIS, the Shimano Electronic Intelligent System, which takes over the index shifting function from the mechanical components, only via power cables or radio signals and not via a Bowden cable. Shifting is done by simply pressing a button. This has the advantage that no great effort is required, your concentration on the ride is not disturbed and operation is easy even with cold hands. In addition, the electronic gear changes are very fast and highly precise. There is also no risk of a defective circuit due to dirty cables or other problems. You can adjust individual settings via the E-Tube Project, such as adjusting the shifting speed, the number of shifting operations per button press or the Synchro or Semi-Synchro shifting function. Shimano offers an app for this purpose. Gear maintenance and firmware updates are also done via E-Tube, with the bike connected to a PC running the appropriate E-Tube software for more extensive workshop work.
Gearing: 2-speed, 12-speed
Manufacturer Number: I-STR8150PA
- 1 x Shimano BC-R680 1000 mm brake cable
- 1 x Shimano BC-R680 2000 mm brake cable
- 1 x Shimano brake cable housing, 800 mm
- 1 x Shimano brake cable housing, 1800 mm
Specifications:
Series: Ultegra Di2 R8150Application: Road
Gearing: 2-speed, 12-speed
Shifting System: electronic
Brake Type: mechanical
Technical Information:
Brake Lever Material: aluminumLever Body Material: composite (GFRP)
Mount: clamp (closed)
Reach Adjust: bolt
Adjustment Options: reach adjust
Compatibility:
Clamp Diameter: 23.8 - 24.2 mmPower cable: EW-SD300-I (2 x connection)
Rear Derailleur: RD-R8150, RD-R9250
Front Derailleur: FD-R8150, FD-R9250
Crankset: FC-R8100, FC-R8100-P, FC-R9200, FC-R9200-P
Cassette: CS-R8100-12, CS-R9200-12
Chain: CN-M8100, CN-M9100, CN-M7100, CN-M6100
Rim Brake: BR-R8100, BR-R8110, BR-RS811-R, BR-R8000, BR-R8010, BR-6800, BR-6810, BR-6700, BR-R9200, BR-R9210, BR-R9100, BR-R9110, BR-9000, BR-9010, BR-7900, BR-R7000, BR-R7010, BR-5800, BR-5810, BR-5710, BR-5700, BR-4700, BR-4600, BR-R3000, BR-3500, BR-R561, BR-R2000, BR-CX70, BR-CX50, BR-CX77, BR-R517,BR-R317, BR-RS305, BR-R650*, BR-R451*, BR-R450*, BR-R550*
Satellite Shifter: SW-RS801-S, SW-RS801-T (1 x connection via EW-SD300)
* with reduced braking force
Features:
- fast and intuitive shifting with clearly defined click-feel- cone shape and surface structure provide optimum grip and braking force transfer
- firmware updates via E-Tube Project
- lacquered brake lever
Technology:
STI Dual ControlShimano Total Integration (STI) means the combination of braking and shifting functions in one lever, which increases safety when riding. By refining the technology, it became possible to make shifting so smooth at the front and rear that they can be triggered with just one finger. Shimano calls such levers Dual Control Levers (DCL).
Digital Integrated Intelligence (Di2)
Di2 systems are the electronic shifting systems from Shimano. They are based on the SEIS, the Shimano Electronic Intelligent System, which takes over the index shifting function from the mechanical components, only via power cables or radio signals and not via a Bowden cable. Shifting is done by simply pressing a button. This has the advantage that no great effort is required, your concentration on the ride is not disturbed and operation is easy even with cold hands. In addition, the electronic gear changes are very fast and highly precise. There is also no risk of a defective circuit due to dirty cables or other problems. You can adjust individual settings via the E-Tube Project, such as adjusting the shifting speed, the number of shifting operations per button press or the Synchro or Semi-Synchro shifting function. Shimano offers an app for this purpose. Gear maintenance and firmware updates are also done via E-Tube, with the bike connected to a PC running the appropriate E-Tube software for more extensive workshop work.
Models:
2x12 speedGearing: 2-speed, 12-speed
Manufacturer Number: I-STR8150PA
Contents:
- 1 pair of Shimano Ultegra Di2 ST-R8150 shift/brake levers- 1 x Shimano BC-R680 1000 mm brake cable
- 1 x Shimano BC-R680 2000 mm brake cable
- 1 x Shimano brake cable housing, 800 mm
- 1 x Shimano brake cable housing, 1800 mm
Gram Weight:
- anthracite/2x12 speed: 295 g (Pair)
