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I lived in Japan in the late 80's. Was a teenager then, but really into bmx bikes, so rode my bike around everywhere. I remember there being some townie/3 speed type bikes that lots of people used (think the Japanese equivalent of the Dutch City Bike) that had some sort of integrated lock that was part of the fork.
On one side of the fork crown, there was a little slot for a key. When you slid the key into the slot and turned it, a little rod would protrude, and immobilize the fork, or making the front wheel not turnable. I don't remember which.
I always thought that was a great idea, if not flawed from the "but you can still throw the bike in the back of a truck" perspective.


These integrated locks are everywhere in the Netherlands, and they seem to work well. Of course, throwing a bike in the back of a truck is an extremely suspicious activity in such places, and would draw attention.


Doesn't really seem secure enough for a US city, but you can still buy them. Velo-Orange has them http://www.velo-orange.com/ringlock.html, with a reasonable description of where it might be safe to use one.


VO is the only u.s. source i know. i'm putting one on my touring bike. it's a great type of lock for when your bike is in view but not in reach, or left alone long enough to be jumped on and ridden away but not long enough to be hauled off.

Dan H.

The KHS Green comes with a "rear lock" included: http://www.khsbicycles.com/09_green_10.htm


I've been researching dutch bikes this spring in advance of purchasing one, and it looks like most dutch city bikes come with an integrated lock or 'ring lock'. At least the Axor Workcycles bikes, and Velorbis bikes do, and I think Gazelles too. In a major city a ringlock alone won't do the trick, but along with a U-lock or chain lock they offer some decent security.

MI've got a close-up picture of a ring lock on a recent blog post about bike locks. Also - I've got a question for Matt about your OnGuard Beast Chain. I'm familiar with the big Kryptonite and ABUS chain locks, how do the OnGuard locks compare? Do I need to add them to my list of locks to consider for my next bike?


Bought one of these in Japan back in 1998. Not for the mean streets on the US. A bile thief can simply shoulder the bike and make off.


Just saw a review of a new (?) brand of ring lock called the "Mighty Amsterdam" .. though it's made in China. It's not even a good ring lock, so beware. See a video of how easy it is to pop open on David Hembrow's blog here: http://hembrow.blogspot.com/2010/06/mighty-amsterdam-lock-product-review.html.


I have a similar bike lock that I bought for a couple of bucks in my travels in Sri Lanka. It is made of sheet metal and semicircular bar of about 1/4" that goes through the spokes and around the wheel. Low security for sure.

Donald Hayward

My bike has one (it is a European import that I bought from a dealer when he was getting rid of it) and I love it. It's of course no use to leave it locked like that over extended periods of time, but for 60 seconds and still within line of sight, it's great (and much faster than using a U-lock) -- it prevents thefts of opportunity. Also, it helps prevent your wheel from being stolen.


I have one from Velo Orange. Works great to immobilize the bike when I put it on the rack on the front of a bus. Anyone who tries grabbing it will get a surprise and it'll slow them enough that they can be caught. I'm not sure I trust it for much else.


The integrated lock on the bike that builder Tony Pereira won last year's Manifest with pretty much takes the cake. http://www.flickr.com/photos/pereiracycles/3974630071/


These locks are definitely rare in the US, but you can find them around. Here's a selection: http://clevercycles.com/products/accessories/locks/#_


The only places you can find these locks are VO (smaller Abus Ring lock) and CleverCycles in Portland. Clevercyles has the kind that accepts a chain or cable lock, which makes it more useful. Ring locks also prevents the rear wheel from being stolen when you use a U-lock up front.
The Torker Cargo-T has threaded frame mounts for the larger ring locks like the AXA Defender (VO one doesn't fit).


As a Dutchman I can tell you all new city model bikes here are sold with a ringlock. They even have the same security / warranty level as the big chains and U-locks.
But they always tell you also to lock your bike to a none moving object preferably with front wheel and frame. Bikes in the higher price range often have a second lock integrated, like a u lock as part of the bikerack. Or even nicer a cable which comes out of the frame and locks into the ringlock or vanmoof no.5 with a chain lock integrated in the frame...
which is one of the nicest dutch designed city bikes around.
all except the giant down town.
on this bike the handle bar is the actual lock. So when the brake open the lock to steal the bike they have no handle bar.


I have a AXA Defender frame lock on my Globe Live 3. The Live series has braze-ons for the locks on the seat stays and the lock mounted right up. In addition to the frame lock feature this particular lock also allows for a cable or hardended chain to be snapped into it. Info at http://www.cantitoeroad.com/catalog/product_info.php?products_id=103


Two thumbs up for the AXA Defender with optional chain. My Redline R530 came with the mounting bosses already on the bike, as did my Staiger Trekking bike (no surprise there) The bad part is they are a bit pricey and you cannot easily move them between bikes, the good part is they are on the bike and you cannot loose/forget the key until AFTER the bike is locked up.

The Defender also comes with mounts to allow you to mount them to a bike without the factory mounts.




As far as my Onguard Beast chain, I have had it for four years now and I like it. I have never owned a Kryptonite product so I can't really compare. I can tell you it is really heavy, but I ride with it around my waist and got used to it after only a few days.

How do I ride with it? See here:



These locks are meant for quick stops where someone stealing the entire bike is unlikely. IT SHOULD ALSO BE NOTED, Dutch people double lock their bikes.

In the picture you can see that the chain is always used for the front wheel since it easier to steal than the back, and the frame. The wheel lock is used for the back wheel since that would get stolen too if it wasn't attached. Bike theft is very regular part of Dutch living. Trust me, they use this as a double lock... it's something I wish it were easier to source here in the US.

For people with only one bike lock, please lock your front tire and frame. It's a bigger pain in the butt for a thief to steal a back wheel.

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