I recently bought a used Decathlon Triban RC100 and want to upgrade the stock Shimano Tourney rear derailleur (7-speed). I’m considering either the Shimano RD-M3020 (Acera, 7/8-speed) or Shimano Altus RD-M310 (7/8-speed), both MTB derailleurs. I’m currently using stock MicroSHIFT brifters (7-speed).
Will either of these derailleurs work smoothly with my current setup, especially with the MicroSHIFT brifters?
Between Acera M3020 and Altus M310, which is better for road use?
by Technical_Fail_1951
2 Comments
the one in the first pic can use more gears in the back.
The m3020 can accommodate a larger cassette (up to 40t) than the RD-M310 (34t). I’d take the RD-M310, they’re cheap and work very well.