Shimano Deore M5120-SGS 10/11-Speed Rear Derailleur
Delivering consistent 10- or 11-speed shifting performance on rough terrain, the Shimano Deore M5120-SGS rear derailleur uses Shadow RD+ tech to boost stability and reduce chain drop, slap and noise.
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- Shadow RD+ system features a clutch and chain stabilizer that can be switched on or off to match terrain, reducing chain slap for a quieter ride and better chain retention
- Versatile design is compatible with 2 x 10- or 11-speed drivetrains and 1 x 10-speed drivetrains
- Design reduces chain tension in low gear
- Low-profile design avoids damage from rocks
- Maximum low sprocket size: 42-tooth when used with a 2 x 10- or 11-speed drivetrain, or 46-tooth when used with a 1 x 10-speed drivetrain
Imported.
View the Shimano Deore Product LineView all Shimano Rear Derailleurs| Best Use | Mountain Biking |
|---|---|
| Derailleur Type | Rear |
| Cage Length | Long Cage |
| Max Rear Cog Size | 46T (1 x 10-speed) or 42T (2 x 11/2 x 10-speed) |
| Speeds | 10-speed 11-speed |
| Weight | Unavailable |
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EXCELLENT
Very High-Quality derailleur. Allows using a 42-tooth cassette. The chain guide wheels have side to side play. This may be fine, but I installed the sealed bearing pulleys from my old Shimano XT.
Good replacement unit
Replaced an older SRAM derailleur when I upgraded the 10 speed cassette from a 42 teeth big wheel to 46 teeth also replacing the chain and cable at the same time. I reused the 10 speed SRAM shifters. Things mostly seem to work but it took some trial and error to setup the stops to keep the chain from sucking. Shifts are still a little imperfect so I don't know if I'll be able to get it perfect but I'm impressed that it works as well for a fairly inexpensive derailleur. I haven't had the bike on rougher terrain to see how it reacts but it works well enough in the flats.