The Shimano Deore RD-M5100-SGS rear derailleurs offer consistent MTB shifting performance thanks to years of Shimano design innovation.
- SHIMANO SHADOW RD+ chain stabilizing system (clutch):
- keeps chain taut, reducing both noise and damage to chainstay
- is lighter and more efficient than roller chain-guide systems
- toggles on and off for easier maintenance.
- Reduced chain tension in low gear chain position (on large sprocket) ensures a silent drivetrain in all gears.
- Hidden away, low-profile design helps avoid derailleur damage.
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RD-M5100-SGS - SHADOW RD+ 1x11-speed
Lowest (Largest) Cassette Sprocket: 11-51T ONLY
Features a larger, 13T pulley
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Our thoughts:
M5100 Series is a really great offering from Shimano if you want to breathe some life into an HG freehub system.
If you're looking for a 12 speed DEORE derailleur, that's the DEORE RD-M6100.