Shimano XTR RD-M980 10 speed rear derailleur

Shimano XTR 10 speed derailleur

Weight: 180g for long cage (SGS) version.

Features a carbon fiber outer plate but an aluminium inner plater (the 9-speed XTR has both inner and outer carbon fiber plates).

11-speed compatibility?

Quite surprisingly, the 10 speed rear derailleur will work as an 11 speed rear derailleur if you use an 11 speed cassette and shifter.  It will also work with an 11 speed shifter to shift just 10 speeds on a 10 speed setup.  This is how I achieved a neat cockpit with my XTR M9000 brakes and M9000 11-speed iSpec II shifter pods; More info on mixing 10 speed casssettes, derailleurs and 11 speed shifters here.

Where to buy?

Amazon's got you covered with every option of XTR RD, sometimes with good prices too!

Related articles:

Shimano XTR Di2 M9050 11 speed rear derailleur

This has got to be one of the most expensive rear derailleurs you can hang off the back of your MTB (and part of the super expensive XTR Di2 group).

Shimano XTR 11 speed rear derailleur - M9000

Quick facts:

Shimano Zee Rear Derailleur

Comes in two different versions:

Shimano derailleur spare parts

SRAM X.0 9 speed rear derailleur

weight: 198g;

Shimano Deore XT RH (rear) 9 speed shifter

What's it weigh?