Review of Kryptonite Keeper 12 LS Bicycle U-Lock with Bracket Bicycle U-Lock (4-Inch x 11.5-Inch)

Kryptonite Keeper 12 LS Bicycle U-Lock with Bracket Bicycle U-Lock (4-Inch x 11.5-Inch)
By: Kryptonite Average Rating: 3.5 Total Reviews: 6
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Works like it should

On: 2009-10-29

This is a lower end Krytonite for less expensive bikes or secondary security. My bike is in a bike cage, so this lock suffices. It does not have the higher end security features since as center key slot and hardened steel around the mechanism. The mechanism itself is smooth, and it appears to be good quality. The extended length is handy.

lousy, lousy lock

On: 2009-10-05

After a month of light use, its already breaking down. It takes eight or nine tries to get the lock to turn and its clearly going to be impossible to open at all before long. A blemish on the name of Kryptonite. Im buying a replacement before I face a crisis in which the lock breaks entirely while my bike is locked up with it.

Nice to Have it Long...

On: 2009-08-31

Indeed, Ive found that when securing bike to other than dedicated Bike spaces, its always handy to have extra room, especially when locking the front wheel and frame. This Lock delivers durability with fairly light weight, Im sure a sledgehammer would knock it right off, but then again most locks would give in to the hammer. I recommend this one for mid-level security, wouldnt trust a super expensive bike to it though.

Good lock, bad lock-keeper.

On: 2009-05-04

The lock itself is great, but if you want to be able to attach it to your bike frame for storage, pick a different one. It comes with a piece that you can screw onto the frame of your bike, and the lock slides onto that piece so that you dont have to worry about carrying a big lock around. One problem with this piece is that it absolutely will not fit on a large-framed bike like a mountain bike, even with extra-long screws. The other problem is that the piece attaches to the side of the lock instead of the base, so the length of the lock must run parallel to the part of the bike frame it is attached to. Therefore, the only part of most bike frames that will be long enough to accommodate this lock is the top bar between the seat and handle bars. But to keep all of that clear of the brake and gear lines that run along the frame in that place, you have to install the lock-keeper sideways, so the lock is in the way of your legs while you ride. Basically, unless you have a bike with an extremely large but thin frame, you wont be able to use the lock-keeper to store your lock.

Good Lock For ~$20

On: 2009-01-06

I live in a pretty good area of SLC, but needed something more secure than a cable or chain. The long shackle makes locking the bike easier. Good lock for the money.

not to be recommended

On: 2007-01-20

This lock has several faults
After some weeks of usage the inner cylinder did not move smoothly anymore, so more force was required to open the lock. As a result the key which is made from very soft material got twisted and could not be used anymore.
Furthermore water enters easily into the locks mechanism. This makes the lock useless for winter conditions - the water inside will freeze and block the mechanism so you just can not open it anymore.