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Shimano Deore RD-M5120 10/11 Speed Rear Derailleur Mech Black – Read Description. nnIu2019m not sure if the mech has an issue or not so Iu2019m advertising as u2018spares or repairs. I struggled to set it up without a slight skipping so I replaced it. Itu2019s in excellent condition and the original grease is still in there. Thereu2019s no marking to the body. The B tension screw head is rounded out making adjustment difficult.nnCheck my other items for more bike bits.nnShipped with 2nd Class Royal Mail.
- Always stable transmission system.n
- Low profile design avoids impacts with rocks.n
- Stabilizer reduces noise impacts and chain falln
- Silent transmission regardless of the 4