Shimano Ultegra Di2 ST-R8170 2 S Left Control

Shimano ULTEGRA Di2 ST-R8170 2-Speed STI Dual Control Left

The new levers Shimano the Ultegra Di2 ST-R8170 impress with new ergonomics and even more precise brake modulation thanks to SHIMANO's proven SERVO WAVE technology. Wireless electronic shifting gives you even more control.

THE SCIENCE OF SPEED: Shimano Ultegra Di2 2-speed unit STI ST-R8170-L

Great speed means great responsibility. That's why, faced with the task of making the new ULTEGRA group even faster, Shimano opted for a holistic, performance-oriented approach to the 100%. The new 12-speed road groupset offers unrivalled control and comfort anytime, anywhere - whether in a race for everyone, chasing a personal time or riding with friends. This is the "Science of Speed". And that's what sets SHIMANO apart from the rest.

Features - Shimano ULTEGRA Di2 ST-R8170-L Left 2-Speed STI Unit for Hydraulic Disc Brake

THE FASTEST AND MOST RELIABLE GEARBOX EVER

Improved aerodynamics - Revised DUAL CONTROL shift/brake levers with raised and rounded brake handles

The ride can be adjusted to the rider's preference via the E-TUBE app

Among other things, the shift speed can be adjusted, a fully or semi-synchronous shift mode can be selected, and specific functions can be assigned to the program buttons on the gear lever

Wireless Where It Matters

SHIMANO's self-developed and extremely secure Di2 wireless chip is distinguished by its low probability of interference, unmatched processing speed and basso power consumption

Faster shifting front and rear

Wireless TSIs impress with high energy efficiency and battery life of up to 1.7 years (CR1632)

Product features

Range of Use: Road Bike

Group: Ultegra Di2 R8150

Model No.: ST-R8170-L

Type: Dual Control (TSI)

Mounting: Left

Front gears: 2-speed

Optical Gear Indicator: No

- Handle Width Adjustment: Yes

Handlebar Diameter: 23.8mm/24.2mm

Brake Type: Hydraulic Disc Brake System (Disc Brake)

Recommended brake caliper: BR-R8170

Compatible Power Cord: EW-SD300

- Project E-tube Firmware Update: Yes

Number of E-tube connections: 2

Number of E-tube connections: 0

Di2 Wireless Chip: Yes

Material

Handle: CFRP

Lever: Carbon, painted

Color

Series Color

Scope of delivery

1 x Shimano Ultegra Di2 ST-R8170 2-Speed STI Left Disc Brake Unit

Brake caliper BR-R8170, brake hose SM-BH90-JK-SSR and mineral oil SM-DB-Oil not included in delivery!

Technologies

SEIS INTELLIGENT ELECTRONIC SYSTEM SHIMANO

The innovative shifting technology of the SEIS continues to be based on the SHIMANO INDEX SYSTEM (SIS), whose superior shifting performance has been proven for many years. The main difference between the systems is that the changing process is no longer mechanical but electronic. This electronic shifting system has been extensively tested over the years by several professional cyclists in all imaginable conditions, e.g. rain, mud, extreme cold, on cobblestones and even in a combination of these factors. The change is done at the touch of a button. No effort is required to change gears, which brings considerable advantages, as the rider always has a firm grip on the handlebars and can concentrate on riding without being distracted by shifting gears. The shifting system allows for precise and effortless shifting in all situations, even with cold hands or when the rider is completely exhausted. The performance of the gearbox can no longer be affected by dirty or stretched cables, as the shift signal is transmitted electronically. The control buttons work similarly to dual-control mechanical levers, making it easy to get used to the SEIS.

E-Tube

The E-Tube platform offers optimal flexibility. E-Tube transmits interactive signals and powers all parts through "plug & play" connections. E-Tube is resistant to corrosion, expansion and frost and ensures low maintenance. And the SMPCE1 provides the connection between the PC and the components to update the firmware. Digital devices stay up-to-date and provide better operation by updating the firmware.