ABUS U-Lock Granit XPlus 540, Bike Lock with XPlus Cylinder, High Protection Against Theft, ABUS Security Level 15, Black/Grey

Significantly lighter than the equivalent Kryptonite product, and for me, that was enough to warrant purchasing it. Further, significantly more Kryptonite reviewers noted problems with their locks getting jammed up and the key not turning in the lock, this despite application of lock appropriate lube. This happened with Abus users, but it was a lot less. This lock was made in Germany, the Kryptonite lock is made in China. To me, that says a lot about why there is a difference. Ive had this lock for about two days, so we will see how it goes. Lock was shipped quickly, and weirdly, there was no packing material in the box. Not that the lock really needed any, but still.

I finally got myself a new bike, and wanted a new lock in the vein of a Kryptonite U-Lock. I have two previous K-locks that never failed me, but then I tend not to lock up unsupervised in public for long. I like the feel of the ABUS; the key action is smooth and the mechanism feels well made and sturdy. I understand that any lock is the best until its defeated, but so far so good. My one complaint is that even though its the same size as my K-locks, because of the U-bar shape and layer of sealant, it doesnt readily fit in my back pockets like a K-lock. I ride with my U-locks in my back pocket for security and driver harassment deterrence, so now I need to make other arrangements to keep it handy while riding.

Expensive, but what a great lock. The key engages and turns like butter (important to me after replacing two cheaper u-locks, in two years, that the keys finally couldnt turn any more from binding-up). Ive had this lock for a year, in Seattle weather, commuting at least five days a week without interruption (all seasons) and the lock appears to be weather proof. Its heavy, coming in at about 3-1/4 lbs. for the 9 and 3-3/4 lbs. for the longer 11 model (I own both). But when you weigh 250 lbs., and ride steel frames, its less than 1% difference relative to the cheaper, dead, discarded u-locks Ive had. If youre riding carbon, and are skinny, well, I cant imagine you would want this lock stealing back all the reduction in weight youre enjoying. This does not come with the frame mount, bought it separately (about $25). It, too, is excellent, no rattling, easy to remove and return to the mount. The locks square shackle, hopefully, means that anyone using a power cutting wheel would have to make two cuts, because the shackle does not twist in the lock like round shackles can. The shackle feels stiff/strong enough that a thief would be hard-pressed to bend the shackle after a single cut.

Good lock, but living is a high thief area, I choose a different, what I feel was better for my purpose

This lock is a bit heavy, but you do not want a light, cheap lock for your bike. This lock is strong and easy to use. It comes with two keys, one with a led light on it. I love this lock and feel very secure with it on my bike.

This lock feels indestructible, but the key is now permanently stuck in the lock with my bike locked to a rack. ABUS will not replace the lock unless I return it to dealer where I bought it for inspection. That dealer was Amazon, and the return window is long gone. I can ship the lock to ABUS to have them inspect it and determine if a replacement is warranted, but its stuck on my bike/bike rack and even if I could get it off I would be without a lock for a few weeks. I recommend going with Kryptonite bike locks instead, as I have one of those that I purchased in 2005 that still works great 15 years later.

The best U-lock on the market, in my opinion. Its expensive, but when protecting an expensive bike, what price security?? The best thing about it is the German construction, and the DOUBLE end locks, requiring only one key and one key hole. Anyone who calls this lock heavy, obviously has never tested the other high security U-locks out there, thats for sure.

Watched a review of e-bikes on YouTube about making your bike less desirable to thieves. They recommended ABUS as having really good locks. They stated that all locks can be overcome, but stated that this brand takes a lot more effort than most others. Purchased two of these locks, one for each of our bikes. This is a very heavy duty lock. It definitely will be difficult for someone to cut through this twice, in order to steal our bikes. The fit and finish of the lock is impeccable. This was a bit of a budget buster, so hopefully in the near future we can afford to purchase the matching chain locks.

No ones stolen my bike yet if that changes I will update my review.

I dont know what is going on with Amazon these days, QC is in the toilet. Seems like 30% or more of my purchases need to be returned, either because they are more than lightly used, damaged, or just poor quality. I got this lock and it was obviously used, and quite damaged. I returned it immediately, of course, and ended up buying one (for full retail, quite a bit more expensive, like an extra $75) at a local bike shop, which carried Abus, but had to order this model. I guess I could have reordered one and hoped it worked out the second time, but I lost patience. The lock itself is great, probably the best U-lock made, period, but certainly the best at this weight. No bolt cutter is going to get through this thing. Of course, thieves in big cities use angle grinders, which will cut through this, but at least it will take a few minutes and make a bunch of noise. I would give 5 stars for the lock, and 1 star for the terrible amazon experience - and I am getting so sick of getting used and damaged stuff, or the wrong product from amazon I have started looking for stuff at brick and mortar stores again, and would rather pay the premium then have to keep returning things to Amazon, or trying to fix things myself. On-Guard makes great locks also, and Kryptonite makes one equal to this (but thicker - 14mm vs 13mm - and heavier, though a bit less expensive) as well as the NY line, which is even tougher, but at 16mm, very, very heavy. I also have an Abus 9mm hardened steel chain lock, which I really like. I use either the chain or the U-lock with a cable to secure the other wheel (although cables are easy to cut, seems hardly worth it to a thief just for a wheel set, but I guess on a slow day, they will do it).