Bicycles Asked on June 7, 2021
I accidentally purchased a fake CNHG901 HG-X11 Chain for my Shimano 2×11 M700 Groupset because my original chain already had 0.75 wear. I was naive and stupid to think that I’d actually get a legitimate chain for the amount of money that I was paying. My question is, since the option of getting a refund is already out, is it actually safe for me to use this chain on my bike or am I better off not using it at all.
Additional info: I found out the chain was not authentic through this video:
where I found many differences between my chain and the one in the vid. Mine had engravings on both sides and not just one, it came with a quick link but not an instruction manual like in the video, and cost about 50% the price of a legit chain.
(The chain in the YT video is not my chain, the video is an actual unboxing of a legitimate shimano chain, I used the video to compare the chain I got and the chain in the video.)
The main problem is quality, in terms of dimensions and variance.
If you think its an 11 speed chain but someone has just repackaged some 10 speed chain, then there will be issues.
Likewise, if it were the right chain but didn't pass Quality Control and was rejected because it didn't match the required dimensions, then it could fail quicker, or accelerate wear on other parts.
If it were me, I'd examine the item closely, using calipers or a micrometer and comparing it to the old chain. You're looking for anything bad, like cracks or thin parts, or variable thickness.
If nothing appears wrong, I'd use it like a normal chain. But I'd do my monthly safety check and remember to wipe down the chain, run the wear checking tool on it, and be wary of climbing out of the saddle with a hard effort.
If I were competing, I'd use this kind of thing on my trainer bike, but not my race-day bike.
If I were riding long distance (ie more than a 10 minute walk home) I'd make sure to pack the spare links, and some pins/quicklinks and a tool in my on-bike toolkit. A breakdown that you can ride away from is much better than having to phone home for a pickup.
Correct answer by Criggie on June 7, 2021
You can normally use chains from other legitimate vendors, be it SRAM or KMC or something else. You do not need to use Shimano™® chains only.
But no-one can tell you whether your chain is of sufficient quality. Only you can inspect it, measure it and try it. We cannot do that.
I am not even 100% convinced it is actually a fake chain, but I will just take is as a premise I am answering to.
Answered by Vladimir F on June 7, 2021
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