🚴♂️ Shift into high gear with Shimano's Deore RD-M5120!
The Shimano Deore RD-M5120 Rear Derailleur is a high-performance cycling component made from durable aluminum, designed to accommodate a wide range of gearing options and compatible with both 11-speed and 10-speed systems. With a capacity of 42 teeth, it ensures smooth and efficient gear transitions, making it an essential upgrade for serious cyclists.
| Mounting Type | Braze-On Mount |
| Number of Teeth | 42 |
| Product Dimensions | 8"L x 5"W x 4"H |
| Manufacturer | Shimano |
| UPC | 192790618548 |
| Item Package Dimensions L x W x H | 6.3 x 4.72 x 2.32 inches |
| Package Weight | 0.35 Kilograms |
| Item Dimensions LxWxH | 8 x 5 x 4 inches |
| Brand Name | SHIMANO |
| Model Name | Rear Derailleur |
| Suggested Users | mens |
| Number of Items | 1 |
| Part Number | ERDM5120SGS |
| Size | 10/11 Speed |
| Sport Type | Cycling |
C**S
Perfect for my restoration project
I put this on my vintage GT mountain bike as part of an updated 1x drivetrain. Works great! It shifts perfectly with very easy set up. Don’t make the mistake I did… I first tried to pair it with a 11-48 cassette but quickly realized it wouldn’t work, looked closer at the description, and saw that it maxes out with a 46t gear. No big deal though. Got an appropriate cassette and it all came together perfectly.
B**E
Seems like a good value
I wanted an inexpensive clutch based derailleur for my bike. This was an easy and affordable upgrade. Everything seems to work well. I just do light riding so I can't speak for the durability under heavy use. But it works well for me. My only gripe is that the instructions are not very clear on how to install if using a derailleur hanger.
D**I
Shifts like butter
Shifts like a xtr at the fraction of the cost just a bit heavier but not noticeable at all.
P**
Adjustable clutch
Typical great Shimano build quality and durability. The clutch is adjustable and can be turned on or off. Shifts perfectly with clutch off. Down shifts can be clunky with the clutch on and adjusted tightly. Only on the hardest hits is there any chain slap and the chain has never come off.
B**5
Works very well, but your frame may cause issues
I bought this as part of an upgrade frenzy on my 1x7 Schwinn Boundary. The original rear hub failed, so needed a new wheelset... which meant I could upgrade to a cassette... which meant I needed a new derailleur... you get the idea. I got this 10s Deore derailleur, a 10s Deore cassette (11-46t) and a 10s Deore shifter. Everything works great together, super fast and smooth shifts, no slips over the 20 miles I have put on it so far... however the derailleur doesn't hang low enough to engage the 2 biggest sprockets. Bought a Wolf Tooth roadlink which should solve the issue, but beware the frame of your bike could necessitate a similar solution. Other than that, highly recommend.
V**C
Buenas
Muy buena. La recomiendo
M**
Excelente producto
Recibí el producto tolmente original tal cual lo que esperaba.
M**
1x10 46 tooth compatible
I bought this to replace my Shimano XT, which would not work with the 11-46 cassette I wanted to use. This setups works perfect.
Trustpilot
1 month ago
1 week ago
