Shimano Ultegra RD-R8150 DI2 12s Rear Derailleur

ULTEGRA Di2 RD-R8150 12-speed Rear Derailleur

The Shimano Ultegra RD-R8150 12-speed rear derailleur not only provides the fastest and most precise shifting performance on the market, but is also more flexible than ever before. Available in one cage length, the rear derailleur is now compatible with 11-34T and also 11-30T cassettes. The compact rear derailleur contains the wireless unit, the charger and the mode button - and has a lot going for it!

THE SCIENCE OF SPEED: Shimano Ultegra Di2 12-speed Rear Derailleur RD-R8150

Great speed means great responsibility. That's why, faced with the task of making the new ULTEGRA groupset even faster, Shimano decided to take a holistic and 100% performance-focused approach. Shimano's new 12-speed road groupset delivers unparalleled control and comfort anytime, anywhere - whether you're competing in an amateur race, chasing your personal best, or out for a social ride. That is "Science of Speed". And it's what sets SHIMANO apart from the rest.

Features - Shimano ULTEGRA Di2 RD-R8150 12-speed Shadow Rear Derailleur

FULLY CUSTOMISABLE

The drive can be adapted to the rider's preferences via the E-TUBE app

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

WHEN EVERY SECOND COUNTS

Our exclusive wireless protocol increases shifting speed without sacrificing any of the shifting precision and reliability SHIMANO is known for

Fast, jerk-free shifting for responsive acceleration at any speed

Low profile rear derailleur design

SHIMANO SHADOW RD

Race endurance for less damage in crush

Maintains compact and smooth appearance

Use: Road

Group: Ultegra Di2 R8250

Model: RD-R8150

Mount type: Direct Mount

Gear rear: 12-speed

Compatible chain: CN-M8100 HG 12-speed

Max. teeth large sprocket: 34T

Min. teeth large sprocket: 30T

Max. teeth small sprocket: 11T

Min. teeth small sprocket: 11T

Max. front difference: 16T

Total capacity: 33T

Compatible electric wire: EW-SD300

Firmware update by E-tube Project: Yes

E-tube port (pcs): 1

E-tube connector (pcs): 0

Di2 Wireless-Chip: Yes

Aluminum

CFRP