Kryptonite GK999492 999492 Lock, Black/Yellow, (1410) 14mm x 60"

I have recently purchased this chain & lock and as soon as i took it out of the box i felt as if i got the right one.It is heavy, solid & easy to lock, unlock. The chain looks treated and Stands out as a serious deterrent.The key has a nice bright blue light that helps in unlit areas at night.Now i thought about maybe giving 3-4 stars but i concluded that the lock itself imo is definitely worth 5 stars so i have given 5 stars.The reason why I considered 3-5 stars is because I ordered this item from koo bikes and it took so long to arrive i contemplated sending it back.It had passed the cut off delivery date. Totally unacceptable. I was very annoyed.So my advice is if you want a solid chain and lock to keep your bike safe, I recommend this one.As for ordering it from koo bikes, fahgettaboudit.

Great product. Heavy, reliable. Likely very difficult for a thief to get through. Note, too heavy to bring on a cycle with you. But good to say, leave one at work or in a bike shed. Pricey though.

Big strong chain n lock. Hopefully not have to rely on it to protect my belongings.

This is a heavy duty lock recommended. It is so heavy, I leave it on my home rack and take a smaller one when I go out. I feel confident my bike is safe with it.

This bike lock will keep your bike safe! They even put a guantee on it; so if someone comes along and breaks it open, Kryptonite will replace your bike for you!My only problem with the lock is the weight; I knew it would be heavy (I even went into Evans to have a look at it before buying for the much better price here on Amazon) but it is almost too heavy; I have to leave it at work as it is uncomfortable to carry in my bag and I don't want to scratch my bike by looping it round part of there. However, this is my opinion, and as I have experienced back troubles in the past few years it may not be something you experience.My only other problem, is that as I left it at work, in both sun and rain, the internal mechanism has got a bit rusty, and sometimes it takes a good whack to open the lock; which I am scared one day will get me in trouble as someone might think I am stealing the bike!! This is despite the weather cover, so therefore I am going to give it 4 stars.Overall very happy with the lock! Well worth the money!

Fantastic, sturdy, great qualityNot had an attempted breach of the chain, but it is very heavy and inspired confidence that the item locked up will be secure.

Truly a perfect chain and lock combo. I would say this is the most reasonable chain size you can carry with you for motorcycles to lock up somewhere, but that's not to say it doesn't make a viable permanent ground anchor for your home or work, it's a true tank.If someone has the tools and power to cut through this lock or chain, 99.99% chance they're going to have the power and tools to cut through any other huge chain irregardless of it's size at this point.My only gripe is the lock, the evolution series 4 really does struggle to unlock and can be frustrating at times. That's not to say it's unreliable, it's just time consuming.

Bought this to secure my bikes to my campervan bike rack overnight when we are traveling. It weighs a tonne. Can't imagine any thief could be bothered with trying to break into it, it's insanely chunky and robust. I feel very secure when using this, it would be easier to steal my van than the bikes. However, the down side is that because of the weight we can't leave this lock on whilst driving as it would hang down and bash the rack. Ideal if you want to secure your stuff. Not good if you want a lock that you intend to carry about with you. My priority is making sure my bikes don't get nicked and I really believe this lock is about as secure as you can get so it suits me perfectly.