SHIMANO Ultegra Di2 RD-R8050 Rear Derailleur Short/Medium Cage

The electronic Ultegra Di2 RD-R8050 rear derailleur by Shimano stands out for high precision and reliability. Thus, you can fully concentrate on the track and your competitors. The Synchro-Shift feature with two different modes makes the decision for the best chainring/sprocket combination for you at the touch of a button. Di2 rear mech and front derailleur communicate via the E-TUBE cable. The battery-powered comfortable SEIS Di2 shift technology is based on a solid design that offers great stiffness despite a low weight and aerodynamic advantages at that. Besides, the Shimano rear derailleur sits under the cassette to reduce air resistance and to protect the cage from damages. Two cage length options (GS and SS) provide a wide range of gearing compatibility for good performance. Thus, the R DR8050 rear mech is suitable for both road cycling with intensive climbs and aggressive cyclo-cross.

Details:
· Electronic rear derailleur for Road and Cyclocross
· Compatible with 11-speed
· For Direct Mount
· Wide Link Design for increased stiffness
· Cold forged aluminium
· Aerodynamic Shadow Low-Profile design
· Cage: short/medium
· Compatible with SHIMANO Synchro-Shift
· 1 E-Tube connector
· Compatible cable: EW-SD50
· Recommended chains: Shimano HG-EV or HG-X 11-speed (e.g. prod. code: 2048882)
· Material: carbon fibre reinforced plastic (CFK), aluminium
· Weight: approx. 242 g (SS), 249 g (GS)

Specifications short cage version (SS)
· Total capacity: 35 teeth
· Max. chainring size difference: 16 teeth
· Smallest sprocket: 11 – 14 teeth
· Largest sprocket: 25 - 30 teeth

Specifications medium cage version (GS)
· Total capacity: 39 teeth
· Max. chainring size difference: 16 teeth
· Smallest sprocket: 11 – 12 teeth
· Largest sprocket: 28 - 34 teeth

Please note: Only compatible with Shimano Dura Ace and Ultegra Di2 11-speed/double shifters, such as: ST-R9180, ST-R9170, ST-R9160, ST-R9150, ST-9071, ST-9070, ST-R8070, ST-R8060, ST-R8050, ST-6871, ST-6870, ST-R785

Manufacturer: SHIMANO INC., 3-77 Oimatsu-cho, Sakai-ku, Sakai-shi, Osaka 590-8577, Japan, www.shimano.com
Responsible person: Shimano Europe BV, High Tech Campus 92, 5656 AG Eindhoven, Netherlands, www.shimano.com