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

Im using this with an Abus Cobra Loop Cable. I do live in a large city while a fairly high rate of bicycle theft, and so far my bike has not been stolen, so I guess its working. Though Im sure if someone really wanted my bike, they could get through it. Just note that this lock is pretty heavy and large. I wasnt able to find a good spot on my bike to mount it to. Also note that this does NOT come with a mount. I had to order one separately from overseas at the time, but then of course I ended up not using it. There is a bundle that comes with a mount, so if thats what you need, look for the bundle instead.

Bike mount is NOT included in price!! Costs an extra ~25usd.

Heavy and doesnt come with a holder to secure it to the frame while riding, so its kinda pointless. Its a sturdy, quality lock, but not easy to transport around with you. Really needs to come with a mounting bracket.

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.

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 is SOLID, which is great for safety. The only reason I gave it 4 stars was because it is really heavy. We bought if for my son to lock his bike up at school and it was too heavy to put in his backpack. We ended up getting him a basket to store the lock in. The other thing he didnt like was that it is hard to lock the frame to the bike rack at his school because it obviously doesnt have the length of a cable lock. It can be a bit tricky to get it locked up but once you do, you can feel good knowing its secure.

I am editing my review after contacting DealExperts about the issue. As you can read in my original post, I had some issues with this lock, which was very confusing, as Abus is a top-notch brand and this is one of the best locks on the market. After my beloved bike Peaches was stolen in downtown L.A., I couldnt handle another loss. Im a full-time student with 3 jobs; my friends kindly kicked in for a new bike, but it fell to me to pick out a lock. After struggling with the lock for 2 months and juggling all my jobs/school, I reached out to Amazon customer service. They said it was out of the return window timeframe and referred me to the dealer. The dealer said it was outside the return window timeframe and referred me to Amazon C.S. I went back to DealExperts and BEGGED THEM TO TAKE PITY ON ME, as Im a student with one only way to get around, my bike. For good measure, I wrote this bad review. DealExperts responded immediately with a return auth for me to give to Amazon C.S., and after a lengthy phone call with Amazon, they shipped me a new lock and it arrived in 24 hours! I still need to send the defective one back, but I just need to print the label, which is free. Im super relieved and happy. The new lock works like a dream. I would definitely do business with DealExperts again. Original Post-I was so excited about this lock. I researched extensively and decided on this one, as its as close to top of the line as it gets. But, the key has been stiff in the lock. I ride EVERY day, so this became a thing pretty quickly. I thought, NBD, its new, just needs some use. Nope. Its been 2 months, and I still have to attempt to lock it 8,9,10 times EVERY time. I try turning it around, I try wiggling. I tried bike lube. I tried everything! Now Im not sure what to do. Everything else about it is amazing. :(

It works great, I use a Velcro tie down strap, to help hold it, and keep it from rattling,

Very heavy