They claim to have a patent on everything they list. I can't seem to find what they've patented in any of their products, so it just catches Chinese people's attention. Overall, I find the mirror to be of high quality and securely mounted. My only complaint is that the bottom set screw used to tension the mirror hinge loosens over time. Give him some Loctite. It's incredibly bright in my little 2021 Polaris RZR Trail 900. The last thing to mention is the hole for rotating the mirror which interferes with the movement. Not much is needed, but some SXs have a welded-on mount for a bolt-on mirror. This forces me to move the mirror a little over an inch off center. That means I need a little more left turn. The mirror couldn't do that. I was surprised at how small the range is from left to right. If I could lower the mirror it wouldn't be a problem. So think about the movement you need when setting up.
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