Shimano Ultegra Di2 12-speed ST-R8170 Hydraulic Disc STI and Caliper

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Description

Shimano Ultegra Di2 12-speed ST-R8170 Hydraulic Disc STI and CaliperHigh performance Ultegra wireless hydraulic servo wave disc brake Di2 sti's give you control, modulation and power with minimal effort in all riding conditions. Features: Wireless connectivity to the front and rear derailleurs for effortless trouble free gear shifts With Di2 technology shifting is easy and precise just a light touch, as soft as a mouse click, is sufficient for the front or rear derailleur to instantaneously select the correct gear

3d forged 7075-t6 alloy construction increases strength and keeps the weight down

cornering control 1 2 3 4

It protects your derailleur against chain jams by pivoting back and out of the way and slips slightly when encountering impacts

Sport - 2006

exo an extremely cut-resistant and abrasion-resistant material added to the sidewalls of select mountain tyres

Toggle link design is light action with short lever movement and less effort at the end of shifting stroke

To take full advantage of the power and promise of the SRAM Rival gruppo

Contains right hand 10-speed ST-4725 STI lever

Works also for objects that lodge in the tread

clean and quick—every time

The Hub uses angular contact bearings designed to cradle the balls giving both radial and lateral support for superior strength and durability in real world riding conditions

Widest possible range of use: for Tour and All Mountain

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