Altus Rear Derailleur

Best MTB derailleur under $20?? | Shimano Altus RD-M310 REVIEW!

Altus Rear Derailleur

I think this is the best derailleur under $20. Just to clarify I do see myself getting a better derailleur in the future once I get more into riding. But for a beginner, I think this derailleur will hold up well and it will not break from normal use and abuse. I hope I can upgrade to a Box One sh...

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