$100 brake caliper vs $20 rip-off - AliExpress special

These disc brake calipers from AliExpress look INCREDIBLY similar to JuinTech F1 calipers, but cost MUCH less. So what are the differences, and do they work?

SIROKO CLOTHING – 10% off (automatically applied via link below):
https://srko.co/tracevelo

I love mechanical disc brakes on road bikes. They’re simple to use, easy to setup and maintain, and you can make use of older mechanical groupsets, so are great on more budget oriented bike builds.

I’ve used brake calipers from JuinTech for many years, so when I saw one that looked very similar to an F1 caliper on AliExpress, I had to check it out. The brand is iiiPro, and not only does it look very similar visually, but functionally, it is pretty much exactly the same.

The price however is MUCH lower, so how can they make such a similar product, for so much less. What corners have they cut in the manufacturing process, what are the differences, and will it even work?

Sintered metal brake pads (affiliate links):
https://s.click.aliexpress.com/e/_DFo...
https://s.click.aliexpress.com/e/_DlL...

Timestamps:
00:00 – Start
00:37 – Intro
01:25 – Comparison and build quality
03:42 – Brake test
04:49 – iiiPro caliper test
06:14 – JuinTech caliper test
06:59 – Comparing the inside
08:39 – Sintered brake compound & conclusion
11:32 – Bonus clip

Intro roll:
Created by Dev Joshi - http://www.go2dev.co.uk

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Please note:
I am not a professionally trained bike mechanic. There can be risks associated with using products that are unbranded, untested, or come from sources where the provenance is unknown. Please talk to a qualified bike mechanic if you are in any doubt.

In essence, be careful, do your research, and cycle safe!!!