🚲 TOTMOX - Acera RD-M390 Rear Derailleur for 7-9 Speed MTB Bikes Review

Jupp, just like in the title. Of course I already knew that. No, I bought it because of the price. I didn't bother to look at this important detail. So (1)* for easy installation. Of all (3)* this is only a first overview. Looks a little higher than cheap but not too cheap. I intend to use it somewhat crudely, but nothing out of the ordinary. Well, see you in a few months or if it breaks.

He looked decent. Clearly a copy of a Shimano derailleur. After installing and configuring it seemed to work fine, copy or not. After a day or two the switch was off and had to be reset. It was noticed that the lower swing arm was slightly bent, which affected the shifting. Tried to bend back into shape and it felt like it was made out of tin foil. "You get what you pay for": Most of the plastic components and spring mechanics are fine, but the metal used is not good.

Everything is scratched and even the "Acera" logo is a bit faded. I just got it 1 minute ago. That's not new! >: (Update: I was given several options: 1) replace (which I don't want to wait) 2) refund (which I don't care too much, I want to try a new part asap) 3 ) partial refund. I received a partial refund. I just noticed that the "height" adjustment screw is broken and I can't tighten or loosen it. I will request a full refund.

This is a Shimano copy but they don't try to sell it as a genuine Shimano RD. I swap out nearly 100 Acera switches a year for breakage. This is a great repair replacement so I have a lot of experience with a genuine Shimano RD. During COVID spare parts were no longer to be found. To complete the renovation I turned to this one. It arrived a day earlier than planned. Great job seller! The adjustment screws are slightly over tightened and of inferior quality. Pivot of tension spring slightly…