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Details

  • Hefty 13mm (0.51 in.) hardened steel shackle resists cutting, prying and jacking; rubber-coated shackle and crossbar help protect your bike's finish
  • Dual lock down mechanism secures both sides of the shackle for excellent pull resistance
  • Bump-proof Z-Cylinder tumbler resists picking, pulling or drilling
  • Rounded design and centered keyhole eliminate pry points; extra-thick, molded end caps protect against bumps and hits
  • Comes with 5 laser-cut keys, 1 of which has an integrated LED light; mounting bracket Included
  • OnGuard rates the Bulldog STD U-lock as a 63 out of 100 on its 100-point security rating system, where higher-rated locks offer increased security

Imported.

View all OnGuard U-Locks

REI membership

Specs

Best Use Bike Commuting
Lock Style U-lock
Lock Type Key Lock
Lock Thickness (mm) 13 millimeters
Material(s) Hardened steel
Dimensions 9.06 x 4.53 inches
Mounting Frame
Weight 2 lbs. 12 oz.
Rated 1 out of 5 by from Lock Broke After One Year The tumblers jammed and could not insert the key after one year of usage. I contacted OnGuard customer service and they would replace it if I sent it to them. I assumed they would cover shipping costs as you can imagine that the lock is quite heavy. Shipping cost 17USD and they refused to refund this expense. Combine the shoddy quality of the lock and a poor customer experience, do not buy this lock. Do not support a company that does not care about it's customers.
Date published: 2017-03-14
Rated 5 out of 5 by from Key quality location & overall build is excellent I was concerned about the weight of this lock when I bought it and the store clerk said the frame mount would not be of any use. Besides that he said the lock was a good compromise on size and still small enough to put in a backpack, etc. But what I have found is that it mounts on my large frame Hybrid with no problem, still room for a second water bottle mount, does not get in the way of anything. Stays solid on the frame, does not rattle, super easy to click in and out of the holder. So the lock is always handy, especially on a quick run with nothing to carry it in. Seems very well made, love the key lock quality, location of the key lock and the large amount of keys they give you. So far I have not wished I would have bought a larger lock. It is large enough to go around any public bicycle stand, or any pipe I can find, etc. Also does not scratch the finish on my bike.
Date published: 2016-09-17
Rated 1 out of 5 by from Does not last I have had this lock less than two years and yesterday it suddenly stopped locking/unlocking. The key will not go into the slot. Fortunately, my bike was not locked up at the time. There was not warning of failure, but at least a very aggravating situation did not occur. No more OnGuard locks for me.
Date published: 2014-07-10
Rated 3 out of 5 by from Decent lock for the money. First lock was broken somehow. Second lock had the plastic part that holds the lock on to the bike break. REI was kind enough to give me a new lock, but I wish it were a bit stronger. Overall, not a bad lock for the money. I would probably invest in a tougher or higher priced lock if you live in the city like myself.
Date published: 2013-06-06
Rated 3 out of 5 by from Good but heavy This is a good U-lock style, and it even comes with a warranty from OnGuard up to $1500 on a bike. It is solid and comes with a bunch of extra keys. The lock comes with a mounting bracket to have on your bike, but it is made of plastic and after my bike fell over once it broke :( Its too bad because that was a handy way to carry the lock around. There is some rust after only a couple of weeks, but it can easily be cleaned off.
Date published: 2014-03-23
Rated 5 out of 5 by from Hard Lock. I use this lock for my mountain bike. I like that it has wide opening and made thick enough to prevent thieves to cut it.
Date published: 2014-02-26
Rated 5 out of 5 by from Best way to foil thieves I love this product. Affordable and sturdy. Great buy.
Date published: 2017-04-10
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Please select a color/size.

Reviews

Rated 1 out of 5 by from Lock Broke After One Year The tumblers jammed and could not insert the key after one year of usage. I contacted OnGuard customer service and they would replace it if I sent it to them. I assumed they would cover shipping costs as you can imagine that the lock is quite heavy. Shipping cost 17USD and they refused to refund this expense. Combine the shoddy quality of the lock and a poor customer experience, do not buy this lock. Do not support a company that does not care about it's customers.
Date published: 2017-03-14
Rated 5 out of 5 by from Key quality location & overall build is excellent I was concerned about the weight of this lock when I bought it and the store clerk said the frame mount would not be of any use. Besides that he said the lock was a good compromise on size and still small enough to put in a backpack, etc. But what I have found is that it mounts on my large frame Hybrid with no problem, still room for a second water bottle mount, does not get in the way of anything. Stays solid on the frame, does not rattle, super easy to click in and out of the holder. So the lock is always handy, especially on a quick run with nothing to carry it in. Seems very well made, love the key lock quality, location of the key lock and the large amount of keys they give you. So far I have not wished I would have bought a larger lock. It is large enough to go around any public bicycle stand, or any pipe I can find, etc. Also does not scratch the finish on my bike.
Date published: 2016-09-17
Rated 1 out of 5 by from Does not last I have had this lock less than two years and yesterday it suddenly stopped locking/unlocking. The key will not go into the slot. Fortunately, my bike was not locked up at the time. There was not warning of failure, but at least a very aggravating situation did not occur. No more OnGuard locks for me.
Date published: 2014-07-10
Rated 3 out of 5 by from Decent lock for the money. First lock was broken somehow. Second lock had the plastic part that holds the lock on to the bike break. REI was kind enough to give me a new lock, but I wish it were a bit stronger. Overall, not a bad lock for the money. I would probably invest in a tougher or higher priced lock if you live in the city like myself.
Date published: 2013-06-06
Rated 3 out of 5 by from Good but heavy This is a good U-lock style, and it even comes with a warranty from OnGuard up to $1500 on a bike. It is solid and comes with a bunch of extra keys. The lock comes with a mounting bracket to have on your bike, but it is made of plastic and after my bike fell over once it broke :( Its too bad because that was a handy way to carry the lock around. There is some rust after only a couple of weeks, but it can easily be cleaned off.
Date published: 2014-03-23
Rated 5 out of 5 by from Hard Lock. I use this lock for my mountain bike. I like that it has wide opening and made thick enough to prevent thieves to cut it.
Date published: 2014-02-26
Rated 5 out of 5 by from Best way to foil thieves I love this product. Affordable and sturdy. Great buy.
Date published: 2017-04-10
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  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
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  • REVIEWS, PRODUCT

Questions & Answers

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