Shimano Ultegra Di2 STI ST-R8050 2-/11-speed Shift/Brake Lever

The Ultegra Di2 ST-R8050 shift/brake lever by Shimano - improved tactile feedback

The Shimano Ultegra Di2 ST-R8050 shift/brake lever offers all the advantages of an electronic Dual Control shift function for road bikes with classic rim brakes. The tactile feedback is now even more defined compared to previous models. At the same time, the clearer separation between the shift knobs benefits intuitive operation, even while wearing thicker gloves. The E-Tube platform offers numerous customisation options, such as 2- or 11-speed programmable shift levels, Multi-Shift, or remote control switch configuration. The generous grip width adjustment and the safe dosing of the braking power in the SLR-EV system are further interesting features of the Ultegra Di2 STI.

Information regarding the return of batteries and electrical equipment:

Information on the return and disposal of batteries and electrical equipment can be found here.

Specifications:

Series:

Ultegra Di2 R8050

Application:

Road

Gearing:

2-speed, 11-speed

Shifting System:

electronic

Brake Type:

mechanical

Technical Information:

Brake Lever Material:

Aluminium

Lever Body Material:

composite material (GFRP)

Mount:

clamp (closed)

Reach Adjust:

bolt

Adjustment Options:

reach adjust

Compatibility:

Clamp Diameter:

23.8 - 24.2 mm

Power Cable:

EW-SD50 (2 x connection)

Front Derailleur:

FD-R9150, FD-R8050, FD-9070, FD-6870, FD-RX815

Crank:

FC-R9100, FC-R9100-P, FC-R8000, FC-R7000, FC-RS510, FC-9000, FC-6800, FC-5800, FC-RS500, FC-U5000-2, FC-RX810-2, FC-RX600-11

Rear Derailleur:

RD-R9150, RD-R8050, RD-9070, RD-6870, RD-RX805, RD-RX815, RD-RX817

Cassette:

CS-R9100, CS-9000, CS-6800, CS-5800, CS-R8000, CS-HG800-11, CS-R7000, CS-HG700-11, CS-M8000-11, CS-M7000-11, CS-M5100-11

Chain:

CN-9000, CN-6800, CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500

Brake Caliper:

BR-R9200, BR-R9210, BR-R9100, BR-R9110, BR-9000, BR-9010, BR-7900, BR-R8100, BR-R8110, BR-RS811-R, BR-R8000, BR-R8010, BR-6800, BR-6810, BR-6700, 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-R610, SW-R600 (1 x connection)

* with reduced braking force

Features:

• defined tactile feedback and clearer separation between the shift buttons for more intuitive shifting, even with thick gloves
• programmable gearing
• Multi-Shift can be switched on or off separately for each shifter
• remote control shifter programmable for third-party bicycle computers or shifts
• extended reach adjustment
• SLR-EV brake technology
• anodized lever
• E-Tube project ensures firmware updates

Technology:

STI Dual Control
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.

Models:

2-speed:

Mount:

left

Manufacturer Number:

I-STR8050L

11-speed:

Mount:

right

Manufacturer Number:

I-STR8050R

Contents:

• 1 x Shimano Ultegra Di2 ST-R8050 shift/brake lever
• 1 x Shimano TL-EW02 plug tool (11-speed version only)