I quite like the Kryptonite U-lock "wheel extender" idea - but I'm less attached to Kryptonite as a company - and even less so to the Messenger series of their locks, which is the only one that has this feature.

Kryptonite Messenger Mini U Lock

Are these wheel extenders available separately? I can't find them as a separate item on Kryptonite's website and don't see anyone else offering them either. Are they called generically something else?

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    Two variations: 1) frame+rear wheel with extender on parking post; 2) frame on parking post with extender to front wheel. My ebike has a weird diamondless shape so I can't do a Sheldon to secure the rear wheel so it'd be frame to post with extender on the rear wheel, which has the $$$hub.
    – RoboKaren
    Feb 19, 2017 at 1:29
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    I've seen a chunky cable lock (the sort that expects a padlock to close, with an eyelet at each end) that worked for this purpose - essentially the D lock was the padlock.
    – Criggie
    Feb 19, 2017 at 6:16
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    TBH, that just looks harder to use than a cable, plus has the side benefit of providing the thief with extra leverage to break the lock.
    – david1024
    Feb 20, 2017 at 22:29
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    I'd just get a heavy-duty cable. Apr 22, 2017 at 1:11
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    it would be a great idea to sell WHEEL EXTENDER seprately. I think they can sell at 7pounds and give more protection than a simple Kryptoflex cable that thieves cut very easily. Aug 18, 2019 at 8:51

1 Answer 1


Kryptonite does not sell that separately right now(source: am a Kryptonite distributor), but I'll bring it up to them, see if they are interested in offering it.

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