Shimano Ultegra Di2 STI ST-R8070 2-/11-speed Shift/Brake Lever

The Ultegra Di2 ST-R8070 Shift/Brake Lever by Shimano – More control when braking
The Shimano Ultegra Di2 ST-R8070 shift/brake lever enables intuitive electronic shifting (2-speed or 11-speed) and provides clear tactile feedback that can be felt even with thicker gloves. At the same time, it can be used to operate a hydraulic disc brake, so that the rider can rely on full brake control in all weather conditions and even on the steepest descents. The reduced bar end circumference should be emphasized, which contributes to ergonomics and grip comfort. Grip width and press points are adjustable. The ST-R8070 STI Dual Control lever can also be individually programmed via the E-Tube platform.
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 R8050Application:Road, CyclocrossGearing:2-speed, 11-speedShifting System:electronicBrake Type:hydraulicTechnical Information:Brake Lever Material:AluminiumLever Body Material:carbon (CFRP)Hose:SM-BH90-JK-SSR (not included)Actuation:mineral oilMount:clamp (closed)Reach Adjust:boltAdjustment Options:reach adjust, contact pointCompatibility:Clamp Diameter:23.8 – 24.2 mmPower Cable:EW-SD50 (2 x connection)Front Derailleur:FD-R9150, FD-R8050, FD-9070, FD-6870, FD-RX815Crank: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-RX600-11Rear Derailleur:RD-R9150, RD-R8050, RD-9070, RD-6870, RD-RX805, RD-RX815, RD-RX817Cassette: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-M5100-11Chain:CN-9000, CN-6800, CN-HG901-11, CN-HG701-11, CN-HG601-11, CN-LG500Brake Caliper:BR-R8070 (recommended), BR-R9170, BR-R9270, BR-R9170, BR-R8170, BR-R7170, BR-R7070, BR-RS785, BR-RX820-LE, BR-RX810, BR-RX400, BR-4770Additional Brake Lever:BL-RX812Features:defined tactile feedback and clearer separation between the shift buttons for more intuitive shifting, even with thick glovesprogrammable gearingMulti-Shift can be switched on or off separately for each shifterremote control shifter programmable for third-party bicycle computers or shiftsreduced hydraulic inner workings to adjust the ergonomics of disc and rim brake buildsextended reach adjustmentmultiple input: holdE-Tube project ensures firmware updatesstraight hose connectionfunnel venting with M7 funnel (TL-BR002)shifter made of GFRP, main cylinder made of CFRP, brake lever paintedTechnology: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:leftManufacturer Number:I-STR8070L
11-speed:
Mount:rightManufacturer Number:I-STR8070RContents:1 x Shimano Ultegra Di2 ST-R8070 shift/brake lever1 x Shimano TL-EW02 plug tool (11-speed version only)