Kryptonite 8mm Chain Key Chain Bicycle Lock

Loving my scooter so far. Put about 100 plus miles on it and still running strong! The tools they sent weren't the correct sizes but l luckily I did have my own tools no big deal. Assembly was easy. Wish braking was a little better but I give it a 8/10 on braking. I ride it every weekday for work and it's been a beast every trip. Especially the long battery life even on 3rd gear the whole 6-7 miles I go Overall I give it a 9 out of 10

Haven't had anyone try to break this lock (yet), maybe it has to do with how beastly this thing looks. It's *heavy* so careful with that if you're trying to save weight. The lock mechanism feels good, the chain is very strong... no complaints here. AA battery in picture for scale.

Most definitely, I recommend this Bicycle lock. When I read the word "Kryptonite" the first thing that came to my mind was "Superman" lol. don't let the name fool you. It stands to its name. It is strong, durable and I think it sends an automatic warning to its viewers.

I cannot believe how heavy this chain lock is. It has to weight more than my bike. I don't think there is anyway someone could steel or should want to steel a bike with this chain lock on it. They give it a level 4 protection it is more like a level 5. I give it 5 stars it's perfect for the nylon cover to the 3 foot flex chain it's wrapped around.

This is one serious chain. I am truly impressed. I would really like to see a thief try to get this KRYPTONITE chain off my bike. It is the strongest looking bicycle lock I’ve ever seen, by far. It weighs a ton, and looks like it should last longer than my bike. A great feature since I live near the beach and everything rusts. My only complaint is, it’s not long enough to lock 2 bikes, only 1. Which could be a plus for someone else. Overall I would highly recommend this.

This bicycle chain lock is definitely going to keep your bike safe and secure. They have to come with the jaws of life to cut it off your bike :o)) It's a very heavy chain that's covered in a strong looking material that makes it look really nice. I chose the one with the key lock just because I don't really like fumbling with the combination type locks. Good price, quality chain lock, what more can I ask for.

It is much better than I ever expected. So strong and well made. The chain comes with two keys and is very easy to open with the keys. It is a little on the heavy side and no way can be cut up so it keeps your bikes very safe. I could also use to keep some outdoor stuff safe if I tie it to them. Best bicycle lock ever.

This KRYPTONITE KEY CHAIN BICYCLE LOCK should definitely keep the bicycle EXACTLY where I leave it till I return! It's an 8mm chain, roughly about 3ft in length, and enclosed in a fabric casing. It's rated at LEVEL 4 in terms of security and (just this gal's opinion) it feels substantial enough to moor an ocean-going vessel, so I shan't be concerned about my bike leaving without me. This version comes with two keys, which I IMMEDIATELY registered (online - but there's also a form to do the registration by mail, if preferred): in case I lose one, they'll replace the key .. a nice bit of assurance! Incidentally, the chain has a 'LIFETIME GUARANTEE' .. so that's a good thing too. Not much to not love about this key chain other than the weight which will make it a bit of a chore to manage when en route, (for that I deducted 1 star), but even so, I would not hesitate to recommend this chain to any bike rider who wants the assurance their bike will stay EXACTLY where they park it!

The Kryptonite lock is made with a very heavy chain and looks really strong. The lock isn't a great mechanism and looks like it could be picked very easily. The connection of the chain to the lock housing is simplistic just a small angled piece of metal is all that keeps it locked and will come disconnected if the lock is partially turned. The key is hard to turn and takes some effort to lock and unlock the chain. I would expect a better locking mechanism with a level 4 security rating.

One of the main issues is that it says it's 3 ft and that chain is definitely not 3 ft 2 ft at the most. Another concern is it's very heavy but the chain is not as thick as they advertised it seems a lot of weight is coming from the locking mechanism itself. Another issue is it's supposed to be scratch resistant on your bicycle but it's scratched my bicycle very bad because the cover that's on the chain is really thin and because of that it's stuffed up my bicycle. personally I wouldn't recommend it and since I haven't had it that long I am thinking about returning it to get a refund because contacting any one that sells on here you will not get a response back.