Shimano Ultegra ST-R8070 Di2 Hydraulic Disc STI Lever Set

High performance Ultegra hydraulic disc brake Di2 STI’s give you control, modulation and power with minimal effort in
all riding conditions.

The Shimano Ultegra R8050 Di2 Dual Control Levers blend Shimano’s category-leading hydraulic disc brakes and Di2
electronic shifting. They feature an updated button feel and layout ensuring quick, precise shifting even while
wearing thick gloves. The new levers also feature a greater range of reach adjust and a programmable ST button
switch stop the hood.

With a low-profile Flat Mount design, the Shimano Ultegra R8000 series hydraulic disc brakes provide greater control
in all conditions without interrupting the aero lines of road bikes.

Technology

Ice Technologies

The fade, which can occur to disc brake rotor and pad when braking on a long downhill ride for instance, has a
negative impact on the braking performance. Shimano has adopted Ice Technologies disc brake rotor and Ice
Technologies pad to realize the cooling technology for consistent performance. The clad disc brake rotor blade,
which has a 3 layer-sandwich structure of stainless steel, aluminum and stainless steel, provides better
radiation performance. Also, the radiation fin has been adopted for the pad. Moreover, the clad disc brake rotor
blade and the radiator fin provide long pad life, less noise, less fade and lightweight.

Ice Technologies piston in order to achieve optimized lightweight, high rigidity and heat
dissipation. Oversized pistons transfer hydraulic power directly to the brake pad, and ceramic material is used
to avoid heat transfer for constant stable braking, providing efficient stopping power transfer without loss.

One Way Bleeding

“One Way Bleeding” was developed for quick and easy prevention of air in our hydraulic system. We have streamlined
the oil route throughout the system to prevent air bubbles from being captured in the system.

One way oil routing plus a funnel tool with mineral oil provides an easy and clean bleeding system.

Dual Control Lever

DCL stands for Dual Control Lever. It has brake and shifting functions in the system and enables easy operation.

Ergonomic innovation is probably more critical to the higher standard performance than the added gearing. The shift
internals borrow the robustness from our MTB technology and are so smooth and effortless that one finger shifts
front and rear are possible. Indeed, shifting is the ultimate act of Shimano Total Integration, and simply has
to be experienced to be understood.

The Dura-Ace / Ultegra / 105 Dual Control Lever have an optimized structure with features that include the lighter
weight pivot section in the near side of the shifting unit and the integral shifting cable for lighter steering.
Its
many component parts are made so compact and precise to achieve unprecedented high-speed performance.

Free Stroke

The distance from initial lever position to pad contact point can be adjusted to suit any hand size, type of riding
and individual rider preferences.

E-Tube

E-Tube is Shimano’s “service” that uses websites or apps to maximize the enjoyment of riding a bicycle by connecting
the riders, the bicycles and Shimano.

Shimano’s genuine application E-Tube Project for Mobile allows you to customize your bike, update firmware, and
maintain it by connecting it wirelessly to your bike. You can also get the more detailed bike maintenance by
connecting to your bike by wire with E-Tube Project for Windows V4 application.

Reach Adjust

Brake lever is equipped with a reach adjust mechanism. The distance from handlebar grip to lever can be adjusted to
suit any hand size, type of riding and individual rider preferences.

Features

• 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
• The removal of traditional mechanical cables in favour of electrical wires eliminates poor shifting caused
  by contaminates, corrosion and stretching, and also provides effortless gear shifts
• Full and semi synchronized shifting programable, Synchro shift compatible meaning a single shifter can
  control both front and rear shifting which can be fully custom tuned to your riding preferences. Semi
  synchronized shifting means when a front shift is made the rear mech will automatically correct to the
  appropriate ratio
• Simply pressing tactile buttons allows effortless and comfortable shifting even when your hands are cold
• Drop bar STI with shift buttons located in a near identical place to the positions you’d assume shifting
  using a mechanical Shimano STI
• Hydraulic brake lever provides excellent stopping power with less effort especially from the hood position
• Hydraulic reservoir tank provides pad to rotor clearance auto-adjust maintaining braking performance during
  pad wear
• Finely tuneable reach adjusters for the levers enable custom fitment for all hands
• Free stroke adjustment for pad to rotor contact setting
• Levers are supplied without electrical cables, as these need to be ordered separately to suit
• Two ports for use with E-tube electric cables
• Kit contains bled ST-R8070 STI, BR-R8070 flat mount brake callipers with pads, hoses and mineral oil
  (without rotors or adapters)