I bought this cassette on AliExpress from a reputable seller with thousands of sales and dozens of reviews, but look how it arrived… there are typos on the cassette locking mechanism, and the overall color of the cassette isn't as bright as it should be…
by MrNanabouh
24 Comments
Why would anyone buy anything on Aliexpress if they care that it’s genuine?
Am I missing the typo?
What are the typos, I must be blind.
Is the typo in the room with us?
I’m a pro aliexpress buyer
every bike component in there is about 99% real except chains and cassettes, which are easily faked by chinese
do NOT EVER BUY chains or cassettes from aliexpress thinking they’re genuine. I’ve experimented with this myself and confirmed it by buying both from ali and real retailers
The machining of the cassette looks really good, some Shimano cassette has that half matte look on the finish, fake ones never go that far into machining. As for the lock ring, as long as it secures cassette firmly, the only difference might be weight if it’s a counterfeit, there should be a lot of third party very light alloy lock rings on the market, yours might be a misaligned laser printing or something. Look at the machining of the front, it looks very well made, on the back of the cassette, the spider is perfectly molded, clean. The round silver rivets holding the cogs to the spider are perfectly flush, machine-pressed, and incredibly neat.
This video shows unboxing of a M4100 10s 11-42 Cassette [https://www.youtube.com/watch?v=7n0-DbELswc](https://www.youtube.com/watch?v=7n0-DbELswc)
here’s another video showing a 11-46t 4100 [https://www.youtube.com/watch?v=bTnStOMdlx8](https://www.youtube.com/watch?v=bTnStOMdlx8) , but the guy did a horrible demonstration, constantly flipping the cassette around, very hard to see things clearly on the back
S M4100? Missing a C?
I’ve put thousands of miles on Aliexpress Shimano cassettes. Who knows if they’re real, but I have no complaints.
Disc brake pads, never again. Whole pad sheered off. Local bike shop only.
If there are typoes, then why do you think you need to ask?
The missing “C” in “CS-M4100” confirms it’s not Shimano: it’s a knockoff. However, it looks like a good copy and you paid AliExpress pricing… so, ride it and report back how it holds up?
It’s a SunRace Cassette with an deore lock-ring
Too nice to be fake. This looks legit. I have that one, the matte metal looks right. No way a fake would have that detail.
You can always weight it and cross refference it with the official model data. That’s one way, as the construction and alloy density will differ from a counterfeit.
Yeah I would be confident in saying it’s fake.
Definitely a fake. At least it’s a part not likely to catastrophically fail – just wear out a lot quicker than the real one.
Fake chains though, those are killers.
Ifs it’s on AliExpress it’s a fake. People who convince themselves otherwise are fooling themselves.
I believe it’s a fake. The real shimano cassettes have the model number stamped on the rear/spider part. But it’s a good looking fake so I’d still use it
Bei Shimano steht immer hinter auf der Kassette die Bezeichnung zb.xt oder xtr oder so sowas.
You have to think about the delta in costs between manufacturing a selling a fake. This is still a highly complex machined component, and it’s not a high end sell. How would producing a counterfeit make money? It’s a lot more likely it’s just a mis print
All Deore sets are fake shimano
it’s the real one, the chinese fake cassette doesn’t have hg sharp tooth on the small ring. and it has all the hg tech groove on the large cassette, the rack is also shimano style. the issue of the missing print on lockring isn’t serious at all, printing isn’t always firm as expected.
there are lots of funny guys can’t identify the fake, but they only identify the aliexpress.
you can compare to the official pic.
[https://dassets.shimano.com/content/dam/global/cg1SHICCycling/final/products/cg2SHICComponent/cg3SHICCasseteSprocket/cg4SHICCasseteSprocket/CS-M4100-10_11-46T_1.jpg/jcr:content/renditions/CS-M4100-10_11-46T_1_750_750.jpeg](https://dassets.shimano.com/content/dam/global/cg1SHICCycling/final/products/cg2SHICComponent/cg3SHICCasseteSprocket/cg4SHICCasseteSprocket/CS-M4100-10_11-46T_1.jpg/jcr:content/renditions/CS-M4100-10_11-46T_1_750_750.jpeg)
The DEORE isn’t printed straight
I thought the only Shimano factory outside of Japan was in Malaysia, not Indonesia. This leads me to believe the cassette is not genuine.
I did not think there is a Shimano factory in Indonesia. Malaysia, yes. Indonesia, probably not.