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

Turning the key is butter-smooth. Seriously secure lock.

This is the best bike lock at this price range. Best weight to strength value. I use it for my Ebike.

I picked this bike lock because it hits a lot of great selling points (more info below). I wanted something better to protect my bike while I go into shops or restaurants. I exclusively commute on my bike, so Im forced to leave my bike outside and in the open. This lock gives me the peace of mind that nobody will take my bike while Im away. The lock works very smoothly and I have never had a hangup with the key. The coating does an excellent job at protecting the paint on my bike (no scratches!). It is quite heavy, but its high quality stretched steel. The lock mount is oddly shaped and can be difficult to find a place to mount it onto. I keep the lock in my backpack or satchel instead. Pros: -Hardened, stretched steel -Double bolted square shaped locks -Smooth working lock -Protective rubber coating -Medium shackle length -Two keys, one comes with a light -Replacement keys are easy to get from ABUS Cons: -Its heavy -Mount is tricky to use Here are some specifics: It can resist ~13 tons of cutting force, ~7 tons of pulling force, and 1,300 Nm of twisting force. It uses a double-bolted square shackle. The square-in-square shape prevents twisting. That doubles the locking force as well as resistance against tools.

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.

I think its better than the Kryptonite Brand, its very sturdy and stiff, with easy unlocking/locking using the key. No problems after over a month of use.

I did a lot of research on bike locks before choosing this one. This is one of the highest rated locks (of the other two, one weighs a ton and the other is almost $300). It was number one against lock picking and its extremely resistant to a grinder with a titanium blade in spite of its 16mm shackle. Never mind bolt cutters. Its designed to resist extreme torque as well. Its easy to mount and rests sturdy. No rattling. Besides its amazing strengths, its relatively light in weight. This is my main lock. Although, I obviously dont rely on only one lock. The other is its rival in the same category. The other weighs a ton, tough.

Heavy, but very Secure

Far heavier than expected. Wont fit ladies Trek hybrid when trying to lock bike to small diameter bike rack.

I bought an extra set of keys and carry 2 keys on me at all times.

I used Krytonite locks in the past, but after using this lock, I dont think Ill ever go back. Its strong but light enough to carry in a messenger bag without issue. Locking/unlocking is super smooth unlike my Kryptonite locks that would leave my fingers in pain. Cant praise this lock enough.