Shimano XTR RD-M9050 Di2 11-Speed Rear Derailleur

The Shimano XTR M9050 derailleur brought digital precision to the world of mountain biking. Its integrated chain
stabilizer guarantees accurate shifting in the roughest of conditions while the Synchronized Shift allows for
customizable communication with the front derailleurs.

Technology

SEIS

A technological innovation of the computerized shifting system based on the Di2 concept with which is called, the
SEIS (Shimano Electronic Intelligent System).

The SEIS innovative shift technology is still based on the Shimano Index System (SIS) that has proved its superior
gear changing characteristics over the years. The big difference is that in this case, the shifting action is
provided for by electronics instead of mechanics.

This electronic shifting system has been extensively tested over past two years by several professional riders in all
conditions possible, such as rain, mud, low temperatures, cobble stone roads and combinations of all of these at
the same time.

Shifting is executed by simply pressing the button. No power is needed to shift, which gives important advantages
since it is easier now to always keep a tight grip on the handlebar and to keep your concentration on riding
instead on shifting.

The shift system allows accurate and effortless shifting in difficult circumstances for example when you have cold
hands or when you are completely exhausted. Furthermore, the shifting performance will never be affected by
contaminated or stretched cables since the shifting signal is transferred electronically. The operating buttons
work similarly to mechanical Dual Control Lever so you don’t need to re-program your mind for the SEIS.

HG-X11 Chain

Silky driving, accurate shifting HG-X11 directional chain realize more smoother shifts and greater overall
performance.

Right and left sides are optimized for front and rear shifting respectively.

E-Tube

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

• Easily update to the latest firmware with the user-friendly interface
• Set two e-bike assist profiles to your preference, and customize the assist characteristics according to the
  riding situation
• Design your favorite Di2 gearshift in Synchronized Shift
• Easily adjust both front and rear derailleurs via application

Shimano Shadow RD+

• Less distraction quiet drive train
• Rear derailleur stabilizer reduces chain slap
• Simple solution for chain drop
• Lighter and more efficient than roller type chain device

Features

• Digital Integrated Intelligence or Di2: with programmed automatic motion at the touch of a switch the XTR M9050
  Di2 rear derailleur is quick, smooth and effortless, making for unmatched drivetrain efficiency no matter what
  the riding conditions
• Programmed automatic motion at the touch of a switch makes this derailleur quick, smooth and effortless to shift
• The removal of traditional mechanical cables in favour of electrical wires not only eliminates poor shifting
  caused by contaminates, corrosion and stretching
• Using Shimano’s shadow plus technology and lowest profile to date, the M9050 will help you squeeze through the
  narrowest of trails without worry
• Derailleur contains a saver (fuse) function, where the inner structure is protected from strong impacts
• Synchro Shift compatible means both front and rear shifting can be done through the use of one shifter, which
  can be fully customized to suit your riding needs
• Carbon fibre outer and Aluminium inner pulley plates are the perfect balance for weight saving and durability
• Specifically designed to work with XTR M9000 11-speed Dyna-Sys drivetrain
• 11-speed E-tube Di2 compatible
• Direct mount compatible

Specifications

• Max low sprocket:
• Medium Cage – 42 Tooth (2 x 11-speed), 46 Tooth (1 x 11-speed)
• Long Cage – 40 Tooth (3 x 11-speed), 42 Tooth (2 x 11-speed), 46 Tooth (1 x 11-speed)
• Max Front Difference: 10 / 18 Tooth
• Total Capacity: 35 / 41 Tooth