Pitbull Std U-Lock

Ordered this because it looked tougher than the other U-locks that can be had for $10-40. It might take a minute or two with an angle grinder (not verified) but it'll deter thieves with hacksaws and bolt cutters. Comes with a mounting clip that is screw on, not flimsy like the others that have a pull-tight mount. Comes with 5 keys (1 big, 4 small) which is nice but unnecessary for my use. I use this to lock my bike in the back of my truck (with a cable) and on campus. Easier to use than those circle-wound cable locks, and quite a bit more secure. On campus, this fits through the rear of the frame and rear wheel, securing all but the front wheel of my bike. This won't fit around your seat tube and rear wheel, you'll need something bigger for that. Great value for the price, I'd recommend this lock to any bike owner.

Great lock, easy to lock and unlock. It is big and fairly long however it just missed being able to get my front tire and frame (24 inch) together on same lock so I had to go with the frame when I purchased this for an event. Luckily the event customers were very nice and didn't take my front tire but I didn't expect that to happen either. It does come with a bike mountable holder which is nice and it keeps the lock securely in place when riding. It seems very thick and should take someone a bit of time to try and hack through so for the money spent i think it is great value on a fairly heavy duty lock, I would buy again at this point.

This thing is quite large and as another reviewer has mentioned, comes in toy truck colors. That being said however, this U-Lock is sturdy and definitely won't be easy to crack. I live in LA County so I need a lock that'll at least save my bike frame(and hopefully more...) One amazing reason to get this lock in particular? It comes with a mount for the lock. You can just snap it in place on your bike and not have a bag to lug it around in- I'm using this feature on a colnago road bike,so it should work on most bikes. I have trouble sometimes putting the U lock back into place onto the bike mount, this might be an error of placement on my part though. Overall I'd give this 3.5-4 stars, and below are the reasons why: Pros: Heavy duty, bike mount, several keys, large frame for bigger poles Cons: Heavy, no selection of colors, bike mount could be better, price

Locks are simple tools that need to do a few things perfectly. So far this lock has prevented my bike from being stolen, so that's a nod to its credibility. What's important to me is that the shackle opens and shuts reliably. In this case the OnGuard is flawless. I open and close my lock 10 times a day as I'm running errands, arriving at work etc. I've had other locks that were a pain to open & close. This lock has a solid tumbler & shackle that operate cleanly. And when it gums up I just squirt some WD40 (as suggested by the owners manual). Moreover, each lock includes 5 spare keys and a tag to allow you order replacements. You can tell these guys know their stuff.

Durable af, perfect size not too big nor too small. Can lock the body and wheel together almost anywhere. Also really high quality

I've had this lock for a few months and didn't have any problems until it got cold here in Boston. This lock froze up on me the very first storm we had. I needed to tap it very gently with a small hammer to get it to unlock. The first tap broke the covering. I was able to unlock it after that, but was not able to lock it back up. So my extremely expensive lock sits in my kitchen defrosting. I expect a lock to freeze under these conditions, I get it. It's cold. But I also expect it to be able to with stand a couple of soft taps without cracking and it should certainly re lock after. I bought the most expensive lock I could find because I knew I'd be using it under tough conditions. So far I'm disappointed.

The lock functions as you would expect any good U lock to. but there are a couple things that make this one a little unique. First is the on-bike clip is comes with, most u-locks use a slide into place clip, this one used a sort of side clip that I find vastly superior the the other type, this makes it so that you can mount the lock in places where a traditional style clip may not allow you to remove the lock. Another thing I like is the self closing keyhole, many locks have a plastic cover you can turn to cover the keyhole of the lock when not in use, but this model has a little spring loaded door that you push the key through and that closes when you pull the key out, it's nice for keeping moisture and debris out of the lock mechanism. The lock is also well padded, making sure that although rugged and heavy, it isn't going to ding up your bike. The only real cons I have with it are the awkward and bulky style of the actual lock part of the the design, although rarely, its needlessly odd shape and overly large size made it difficult and even impossible to fit in a few places, making the lock pointless, and the other is the BS guarantee that is offered. U-bar locks aren't invincible, and with the right tools (a cordless angle grinder) and a little privacy they can be cut through in less than a minute. Knowing this the makers have written their guarantee to be void if the lock is cut with a power tool, which makes it worthless, so if you were looking at this lock because of its guarantee don't bother. All in all it's a great lock and I'd recommend it to anyone looking for a U-bar lock. Pros + on-bike clip is superior to other locks + self- covering keyhole + well padded + overall sturdy look and feeling Cons - Overly bulky and odd shaped Lock - 100% BS protection guarantee Lock would be an easy 4 star if they didn't try to trick me with a guarantee that is worded to be worthless.

NYC is a high criminals areas, and the school i go to was next to the black neighborhood. so i got 3 bikes stolen in total!!! i was so pissed off!!!! eventually i decided to buy a better lock to guaranteed my bike won't get stolen again. so my 4th bike i bought this lock and it works like a charm! one day after work, i felt like the position of my bike was altered!! when i ran and check what happened, i saw there were sign of light cutting marks on the shackle. so this lock survived the lockpick!! the lock is pretty good! thick shackle and steel is very strong!! i saw a video that wire cutter breaks for cutter the shackle! if you have an expensive bike, you should at least buy 2 locks though