ABUS Granit XPlus 540 Shackle Lock + EaZy KF Bracket - Bicycle Lock with Strong Parabolic Shackle - ABUS Security Level 15

Comes with an Eazy KF mount included in the price. Chose larger 300 model - Worried I may not find room to fit to my Cube eBike, but found one place to attach it. Seems very stable so far, not done any rough stuff yet ... EDIT: Found a better position to mount - Horizontal in image 1. Great U-Lock with nice key/lock arrangement. Easy to use and seems very sturdy. I added a couple of M5 stainless nuts to the Eazy KF mount clamp points as there were captive spaces provided. I thought it best, better not to have to rely on plastic threads. Great price. Great kit.

Bought this lock after a cable lock seized up at work and we had to get bolt cutters to free my bike so I could go home at the end of my shift. I bought the longer lock as I have to lock up to a concrete post as there is no bike rack at my place of work. This fits around the post fine and is long enough to go around the frame on my bike. It weighs a ton and I certainly know I've got it. Combined with the weight of the battery on my ebike, it is like towing a small elephant to work and back. Locked up at work with 2 other bikes both using cable locks, I think any potential thief would look at those before trying to tackle my lock.

Fantastic bike lock. Probably overkill for my bike, but the inconvenience of not having a bike made me choose this one to make it hard to steal without spending more than my bike is worth. Great mounting system on the bike and lovely secure feel.

Ultimately, if a thief wants your bike and has some kit, there's not a whole lot you can do about it. This beast acts as a deterrent sufficient that I've not had any issues in the last two years. What I would say is that finding a place to put the holding bracket on the bike was a hassle as, even now, I find it bumps against my thigh as I'm cycling. I have a folding bike so there isn't the same storage under the centre beam and everywhere else involved the lock rubbing or bumping against something important. The fact that it clips to the side of the bracket means it's never flush with the bike, so possible something that could be redesigned for the future? Otherwise the clips holds it well, albeit with some movement on the lock, and the lock has hit every weather and still works a treat.

Got myself a very expensive ebike and after doing some research into locks I decided on this Pros -This thing is a BEAST. Just the look of it would make any theif think twice. Trust me when I say no common theif is cracking this lock! The only way into it is with an angle grinder and even then it'll need to be cut twice which will take time and make alot of noise in the process. - Detaches from both ends and clips together with a very satisfying "clunk" - Extremely easy to lock/unlock definitely Feels like it's built to last - the key has a built in light, handy for those darker winter nights. - The mount is great. Pretty simple to fit and keeps the lock in place. Doesn't rattle when at all riding. Cons - its heavy (although its the lightest ulock you can buy) - its biig! Much bigger than it looks. Gives you a good range of locking options especially when combined with a cable but Limited options when mounting it to an ebike. Cant go wrong with this lock. It'll probably be overkill for most people but its better to be safe. Only issue is the size of the thing. bare this in mind before you purchase.

Top reviewed product vs competitors, mount supplied with it is excellent - no movement or rattling and easy to use once you’re used to it, but will only fit slim parts of bike frame. Fixed to my saddle post causing no interference with legs. I have a folding bike and it doesn’t cause issues with folding. Very light despite the effort needed to break it, almost 50% lighter than the next best Kryptonite lock. It can be picked by the best, but so can every other lock and not likely to be picked on street. Buy it.

This product is a brutal deterrent in all conspicuous urban areas , and will certainly persuade any bike thief to attempt to apprehend a less secure bicycle - providing the bicycle lock is secured properly (threading through both the bike rack , frame and back wheel). If your saddle or front wheel has a quick release feature , for optimum security , the Abus cobra cable can be threaded through those structures for maximum security which will be insurance for a lifetime in most urban environments . Positives : Vast size allows thick and bulky frames to be secured , vast length allows for more chunky bicycle stands to be engulfed , two keys provided- one contains a light feature , plastic housing can be placed over the lock to act as an indicator for any cutting etc , durable , practical and brutally strong. Negatives : Won’t protect quick release saddles - should be used in conjunction with cables for particular expensive bicycles .

Excellent product, very sturdy yet light considering it's bulk. The frame fitting clip is very strong and actually works (unlike some others I've used before). My only complaint is that the bolts for securing the frame clip are far too long (even the shorter ones are) and the sharp ends stick out a considerable distance, just waiting to scratch a leg or tear a piece of clothing. I strongly recommend you buy this lock with some acorn nuts to cap the ends of the bolts: https://www.amazon.co.uk/70pcs-Nylon-Acorn-Socket-Black/dp/B07XR5VDF1