Shimano Ultegra Di2 R8050 2x11-speed Electronic Kit for Disc Brakes

The Shimano Ultegra Di2 R8050 2x11 Disc Brake Electronic Kit - Upgrade Now

The Shimano Ultegra Di2 R8050 2x11 Electronic Kit for disc brakes brings a new opportunity to equip your road bike with high quality electronic shifting components (2x11-speed) designed to work together with hydraulic disc brake systems. A modern technological advancement that makes cycling safer and more comfortable, with no obstacles standing in your way. The kit is comprised of an STI shift/brake lever, shifter (SS or GS cage), front derailleur and Junction A junction box (external or internal), similar to a Junction B junction box. Unlike other groupsets, however, a chain, cassette, crankset and disc brakes are not included. Thanks to the Shimano E-Tube-System, equipment can be set up with ease, bringing you always up to speed.

Information regarding the return of batteries and electrical equipment:

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

Specifications:

Series: Ultegra Di2 R8050
Application: Road
Shifters & Derailleurs: 2-speed, 11-speed (electronic)
Brakes: disc, hydraulic (flat mount)

Components:

Front Derailleur: braze-on
Rear Derailleur: short cage (SS) or (mid) long cage (GS)

Compatibility:

Cranks: 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
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-R8070 (recommended), BR-R9170, BR-R9270, BR-R9170, BR-R8170, BR-R7070, BR-RS785, BR-RX810, BR-RX400, BR-4770

Features:

- internal cable routing (only for specifically designed frames)
- internal battery mount
- electrical junction box (junction A): internal (frame or handlebar) or external (under the stem)

Additional Components Needed:

The following components are required:
- with external distributor (SM-EW90-A), installation under the stem: 6 x EW-SD50 power cables (2 x for STI, 1 x for SM-JC41 = Junction B, 1 x for front derailleur = FD, 1 x for rear derailleur = RD, 1 x for battery)*
- with internal distributor (EW-RS910), installation in handlebar end: 5 x EW-SD50 power cables (1 x for STI, 1 x for SM-JC41 = Junction B, 1 x for front derailleur = FD, 1 x for rear derailleur = RD, 1 x for battery) + 1 x EW-JC130 Y-cable junction box (connection between EW-RS910 = Junction A with STI and SM-JC41 junction box) + 1 x EW-JC200 junction box (connection between EW-JC130 and EW-SD50 to SM-JC41 junction box)**
- with internal distributor (EW-RS910), installation in the frame prepared for this purpose: 5 x EW-SD50 power cables (1 x to EW-RS910 = junction A, 1 x to SM-JC41 = junction B, 1 x to front derailleur = FD, 1 x to rear derailleur = RD, 1 x to battery) + 1 x EW-JC130 Y-cable junction box (connection between EW-RS910 and STI) + 1 x EW-JC200 junction box (connection between EW-JC130 and EW-SD50 to EW-RS910)***
- rubber grommets for internal cable routing
- Wireless unit (optional): With the wireless unit EW-WU101) you can send updates about gear selection or battery status to a compatible bike computer or data display. (When using a wireless unit, the EW-JC200 internal junction box is not needed).

* To determine the correct cable lengths, the bicycle must be measured as follows:
- Length of down tube = distance between bottom bracket and stem
- Distance between bottom bracket and front derailleur
- Distance between battery and bottom bracket
- Distance between rear derailleur and bottom bracket
- Distance between shifters (STI) and stem centre

** For the correct cable length the following frame measurements are needed:
- Length of down tube = distance between bottom bracket and wireless unit or EW-JC200
- Distance between bottom bracket and front derailleur
- Distance between battery and bottom bracket
- Distance between rear derailleur and bottom bracket
- Distance between bar end and the next shifter (STI)
For Y-cable: 1. distance between stem and bar end with EW-RS910, 2. distance between stem and STI on the side without EW-RS910 (3. = distance between stem and wireless unit or EW-JC200 is fixed, compare cable lengths: Y-cable junction EW-JC130)

*** For the correct cable length the following frame measurements are needed:
- Length of down tube = distance between bottom bracket and wireless unit or EW-JC200
- Distance between bottom bracket and front derailleur
- Distance between battery and bottom bracket
- Distance between rear derailleur and bottom bracket
- Distance between wireless unit or EW-JC200 and EW-RS910
For Y-cable: 1. distance between stem and left STI, 2. distance between stem right STI (3. = distance between stem and wireless unit or EW-JC200 is fixed, compare cable lengths: Y-cable junction EW-JC130)

You can find more information about installation in the Shimano Handbook or by contacting our service team.

Models:

external, short:
Junction A: external (SM-EW90-A)
Rear Derailleur: short cage

internal, short:
Junction A: internal (EW-RS910)
Rear Derailleur: short cage

external, long:
Junction A: external (SM-EW90-A)
Rear Derailleur: (medium) long cage

internal, long:
Junction A: internal (EW-RS910)
Rear Derailleur: (medium) long cage

Contents:

The Shimano Ultegra R8050 Di2 2x11 electronic kit includes:
- 1 x Shimano Ultegra Di2 rear derailleur (RD-R8050)
- 1 x Shimano Ultegra Di2 front derailleur (FD-R8050)
- 1 x Shimano Di2 battery (BT-DN110)
- 1 x Shimano Di2 battery charger (SM-BCR2)
- 1 x Shimano junction box (EW-RS910 internal or SM-EW90-A external)
- 1 x Shimano SM-JC41 internal junction box
- 1 x pair Shimano Ultegra Di2 ST-R8070 shift/brake levers
- 1 x Shimano TL-EW02 plug tool
- 1 x Shimano USB Y-7FJ00020 charging cable