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

Quality lock, but it is pretty heavy. Im using this as my commuter lock, and putting it in my backpack adds quite a bit of weight. However, good security comes at a price.

Looks strong and is heavy. Should slow down the most determined thief. Did not use the mounting bracket though it worked fine.

Seems like a solid enough lock. The real test is to see if somebody opens it and steels my bike.

Love this lock, dont love the price. However, its the same price on Amazon than pretty much everywhere else..

This is a very solid lock and very heavy but it lasted only one time and the lock got unrepairable stuck thank god we were;t out riding as getting this off at a bike stand would have been quite challenging. I heard great things about ABUS but for the price this was a major disappointment.

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.

Good lock, saved me a long trip to the bike shop to buy.

The price is high but is your bike nice & worth not getting ripped off of yes then id look into This. Make sure you buy the right one with mounting bracket, I bought it & it doesnt come with one so gotta buy separately. There are sellers that sell both bracket & lock together for much cheaper than buyin them separately. I bought them separate & learned my lesson by paying a little bit more but hey good lock.

This lock has a reputation for two things: security and expensiveness. Security alone does not justify the price to protect my $400 bike. I bought it for me, not the bike thieves. I have to carry and operate it. Its light, and it locks and unlocks sooo smoothly. Its the bike lock that makes me feel...pampered. No, I do not sleep with it.

Industry standard. Slightly better security than the other brand but not that much better for the higher price. I think they need to contact NASA to develop a material to resist diamond saws and high-leverage cutters. GPS locators and alarms probably would be better.