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Hexlox: Tiny Bike Security Built On Magnets

A case study in outrunning your friends, not the bear

By Kat Bauman - March 21, 2016

in Cars | Crowdfunding | Bikes

Ever worried about the safety of your wheels or seat when your bike is out of sight? Hexlox is a miniscule new solution to easily stolen bike accessories that's getting pretty big on Kickstarter. The system is based around the ever-present Allen head bolts found all over all kinds of bikes, with a couple unusual features.

Allen bolts are used for virtually everything in modern bikes, from attaching brake levers, to adjusting seat height, to clamping on wheels. The ubiquity is a huge selling point: pick up any set of metric Allen wrenches and you'll be able to fiddle with a bike. But for those of us who want to be alone in the fiddling, there are very few surefire ways to protect these parts.

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The Hexlox is a magnetized nut with a smooth domed profile and a spike in the middle, which fits directly into the head of the Allen bolt. The nut is inserted and removed with a similarly small–but very keychain-friendly–key. It fills the bolt head entirely to block tools, and adheres through magnetic connection strong enough to resist removal by bumpy road or hand-held magnet.

The smooth rounded head sits nearly flush and is resistant to removal by screwdrivers, vice grips, lock picking tools and more. It is being offered in the three most standard sizes used on modern bikes (4mm, 5mm, and 6mm), and the company has adapter options for bikes with titanium or other non-ferrous bolts. They're under 2 grams

Absolutely not to scale

To the best of my understanding the keys and bolts are a distinct match, and with each set you'll also get a code to buy replacement bolts or keys that fit. There are understandably few close photos of the keys or Hexlox nuts, so it's hard to get a gut sense of how accurate their claims are or how it really really works. That said, they've demoed their wares at Eurobike and a couple high level bike shows, and run them by a Berlin Lockpicking Society member who couldn't undo it.

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I'm normally unimpressed by proprietary and keyed bike security (beyond the classic U-lock), because you normally get nominal security at the detriment of the parts' mechanical functionality or a key that's too small to tighten anything well. That these adapt existing hardware, pop in and out in a second, and can be used on virtually any removable bike part is very interesting.

The biggest downsides I can imagine are the small (ergo losable) size of the Hexlox, and the small (ergo losable) size of the key. As of this writing the campaign creators have gotten feedback about including multiple keys in each pack and are looking into it.

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All in all this seems like a low-fuss and seriously low-profile way to secure the more permanent components on a bike. In cities where most bikes stolen are stripped for parts, the Hexlox could save the seats and sanity of concerned bike parents.

Would you use them?

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Eric Jacobsen

7 years ago

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I've been using a set of these for about six months now. They work great, with one monster caveat. I put one under my seat, where, unbeknownst to me, it got caked in mud all winter. Scraping the dirt (at least some of which was iron) out of that little nut with a pin took about an hour. The other hexlox were mostly clean and easily removable. Anyway, after installing a new saddle, I put it back with some tape over it, we'll see how that goes…

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Patrick Allen

8 years ago

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Completely screwed up my order.
1st I paid for rush shipping. I finally got it 2 months late.
2nd They shipped wrong wheel skewers
3rd they told me me would fix the problem and made me wait another month to literally tell me sorry we aren't going to fix the problem.
4. If you feel secure ordering from these bumbling idiots you are mistaken.
No integrity whatsoever.
5. Their support expert basically threw gas on the fire. What a twit.
6. fakespot reviews. they are bogus.

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Carlos Alvarado

9 years ago

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Does the key fix all hexlox's or are they for individual hexlox

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Mackey Smith

9 years ago

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That is an amazing design. The video was fantastic as well.

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