Shimano Ultegra Di2 Rear Derailleur RD-R8150

Now simplified with a single derailleur cage length, the new 12-speed Shimano ULTEGRA R8150 rear derailleur packs our fastest, most precise shifting into a more approachable option. With our fastest, most accurate shifting, the new 12-speed ULTEGRA R8150 rear derailleur is more versatile than ever thanks to a single cage length option that is compatible with 28-34T low sprockets.

HIGHLIGHTS

E-TUBE PROJECT - SHIMANO’s genuine application E-TUBE PROJECT Cyclist 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 Professional application.

Direct Mount Rear Derailleur - 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. Allows for flexible frame design No special tooling requirement (M10x1 Mount bolt, without e-clip) Easier to install rear wheel.

SHIMANO SHADOW RD - 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.

USER'S MANUAL

DM-RAGN010-03-ENG.pdf (shimano.com)

RAGN010 | Manuals & Technical Documents (shimano.com)

SPECIFICATIONS