{"id":8875437261077,"title":"Shimano Ultegra R8150 Di2 12 Speed Rear Derailleur","handle":"shimano-ultegra-r8150-di2-12-speed-rear-derailleur","description":"

Now simplified with a single derailleur cage length, the new 12-Speed Shimano Ultegra R8150 rear derailleur packs the fastest, most precise shifting on the market into a more affordable option.

With the fastest, most accurate shifting on the market, the new 12-Speed Ultegra R8150 rear derailleur is more versatile than ever thanks to a single cage length option compatible with 11-28, 11-30, and 11-34 cassettes.

Shimano Di2 Electronic Drivetrain Performance

Thanks to its lightning-fast, accurate, and reliable shifting performance, Di2 puts riders in complete control and ensures a seamless interface between the cyclist and bike like never before. Creating and continually improving the world’s best shifting is a complicated undertaking requiring constant technological advancements. From hardware to software, Shimano Di2 technology is on the cutting edge, striving to deliver the best rider experience possible now and in the future.

Shimano E-Tube Compatible

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 more detailed bike maintenance by connecting to your bike by wire with E-Tube Project via the Windows V4 application.

Direct Mount Compatible

Rear wheels are easier to remove with a mounting option for SHIMANO SHADOW RD and SHIMANO SHADOW RD+. The direct mount feature is designed to suit a wide range of contemporary frames with large-section chainstays, in particular, mountain bikes with thru-axle dropouts.

Shimano Shadow Low-Profile Rear Derailleur

The mechanism rear derailleur, Shimano Shadow RD, is intended for more aggressive riding. Its super low profile design carries many benefits. Because of its low profile and single tension construction, the derailleur does not hit the chain stay in rough riding conditions. The result is smooth and silent performance.

Fastest ever rear shifting, 58% faster than RD-R9150
Compact design includes an integrated wireless unit, charger, and switch
LED status indicator
Battery indicator
Pairing
Adjust mode, etc.
Wider range capacity
Max. low sprocket: 34T
Speeds: 12-Speed
Weight: 262g

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Now simplified with a single derailleur cage length, the new 12-Speed Shimano Ultegra R8150 rear derailleur packs the fastest, most precise shifting on the market into a more affordable option.

Shimano Di2 Electronic Drivetrain Performance

Shimano E-Tube Compatible

Direct Mount Compatible

Shimano Shadow Low-Profile Rear Derailleur

Fastest ever rear shifting, 58% faster than RD-R9150
Compact design includes an integrated wireless unit, charger, and switch
LED status indicator
Battery indicator
Pairing
Adjust mode, etc.
Wider range capacity
Max. low sprocket: 34T
Speeds: 12-Speed
Weight: 262g