Customer Reviews

Kryptonite Keeper 12 Standard Bicycle U-Lock with Bracket Bicycle U-Lock (4-Inch x 8-Inch)

5 star:		(13)
4 star:		(13)
3 star:		(4)
2 star:		(5)
1 star:		(9)

 

 

I had the same problem that other reviewers had. I ordered the product anyway because I believed that Kryptonite makes good locks and stands behind their products. I just took it out of the package and noticed a major flaw. The fitting is attached to the opposite side of the lock as it is in the picture (above) and you cannot slide it into the clamp without hitting the bike frame. This is hard to describe but like others above me, I realized that it doesn't work. I thought that this was too stupid of a problem to be real, so I wracked my brain for about 20 minutes trying to figure out why I was so dumb and couldn't figure it out. Turns out, I'm not the one who's dumb--whoever assembled this attachment is! I guess we'll just carry the lock on our handlebars or in a backpack, but as far as attaching the lock to the frame.... FORGET IT! Thanks for reading

The lock is good but on a scale of 1-12 (12 being safest) this lock rates at a 7. This is Kryptonite's scale, not mine. Since I live in a downtown, sea-side area, bikes get stolen all the time. I use this lock in addition to a thick cable lock. Between locking the bike frame to a solid object using this lock, I intertwine the cable lock (figure 8 style) through & around the frame and through and around the tires. In doing this, even if they break this lock, they still can't ride off AND, they can't steal my tires very easily.
Another suggestion... loose the quick release on your seat. It's hell having to stand and pedal if they steal your seat. Don't make it easy on them.

Tempted to send it back, but it wasn't worth the trouble. The clamp is on the wrong side and you can't switch it to the other. Makes the bracket useless. Kryptonite should send all of us new brackets.

the clamp is on the wrong side. this item is flawed. I have to send it back. waste of time. waste of money.

Pros: Lightweight. Large enough for two bikes. Decent bracket.
Con: I often have to fight to get the lock open.

The tube is too thin to provide enough strength against using tools to cut off. My bike was stolen this evening in front of a crowded subway station, the lock got cut off completely. I won't recommend this lock to anyone who is going to park their bike in public space for more than 5 minutes.

This lock is simple and straightforward from a great brand. Just what I expected it to be. It is light for a u-lock, easy to open and close, and a great price.

i love this bike lock. i am required by my university to have a u-lock when leaving my bike on campus, and this one is easy, light weight, but still really strong. i am very happy with this purchase.

if you just want a u lock, sure buy this, its a quality lock. if you want a u lock that will mount on your frame, do not buy this...

I guess they finally fixed the clamp problem, because I was able to use it the intended way. I only use the clamp when I don't have my backpack on me, so I can't speak for longevity. It does seem to be sturdy, though. The barrel turns freely when I operate the lock, given that you've inserted the key properly. No issues there. My model looks slightly different than the one pictured, and came with longer oval keys that have a solid feel to them. The lock itself is relatively heavy but that's to be expected. MUCH better than the Wally World locks. I feel confident leaving my bike alone with this lock, however, I do live in an area where bikes are not stolen that often, and I also never leave my bike for periods longer than 2-3 hours. You may want a stronger one if you live in a bigger city or leave your bike outside. ALWAYS ALWAYS ALWAYS pair a U-lock with a chain or wire lock with a separate padlock when leaving your bike for extended periods of time. I cannot begin to describe the way people at my university lock their bikes up. Despite having decent locks, they somehow manage to make it scream "PLEASE STEAL ME". Please don't be careless; you're the only one that will get burned from it. This lock is definitely worth the price. Very satisfied!