The RD-M9210 XTR rear derailleur is intended for use with 2x drivetrains. It is compatible with both 11- and 12-speed cassettes.
- Decreased rear derailleur tension at low gear position, to prevent high chain tension
- Add bumper at rear derailleur pulley cage
- Bigger 13T pulley
- Direct mount compatible
- Cassette size: 10-45t
- Total capacity: 41t