OnGuard Bulldog DT 5012 Bicycle U-Lock and Extra Security Cable | 
 enlarge | Brand: OnGuard
Category: Sports
List Price: $42.99
Buy New: $24.69
You Save: $18.30 (43%)
New (11) from $24.69
Rating:  68 reviews
Sales Rank: 237
Shipping Weight (lbs): 4
Dimensions (in): 11.6 x 5.9 x 1.7
MPN: 5012
Model: 45005012
UPC: 768661250126
EAN: 0768661250126
ASIN: B000FL3E8E
Availability: Usually ships in 2-3 business days
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| Features:
| • | Bicycle U-lock with 13mm hardened steel shackle for maximum cut resistance | | • | X2 double-bolt locking mechanism locks to 2 sides of the bar for added strength | | • | M-Cylinder with BumbBlok mechanism resists drilling, picking, or pulling | | • | Comes with heavy-duty, extra-flexible 10mm steel cable; 5 laser-cut keys | | • | All-tube, quick-release, multi-position mounting bracket; anti-theft protection offer |
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| Editorial Reviews:
Product Description
Double Bolt Locking Mechanism provides added strength by locking the crossbar to the shackle on two sides. Features 13mm ultra hardened steel shackles for maximun cut resistance. Dust covers and vinyl coating protects the crossbar, shackle and cylinder from damage. Includes multi-size/multi-position mounting bracket, (5) keys (1 with micro-light and 4 regular keys), plus OnGuard's anti-theft protection plan. LS: long shackle model for added convenience ATB: slightly wider shackle to fit around extra-fat tires STD: sized to fit most any bike on the market LM: Lean and Mean is the lightest full size U-lock on the market DT: includes four foot cable with lock loops on each end Combo: features user resettable 4-digit combination Mini: short shackle model fits in a back pocket
Amazon.com Product Description
Keep your bike safe while visiting theft-heavy neighborhoods with the OnGuard Bulldog DT U-lock, which comes with an extra security cable. The Bulldog DT offers a 13mm hardened steel shackle that provides maximum cut resistance, along with an X2 double-bolt locking mechanism that locks to two sides of the bar, providing added strength and high pull resistance. The pick-, pull-, and drill-resistant M-Cylinder delivers even more protection, with a BumpBlok mechanism that renders bump keys useless. Similar to the tumbler systems found on high-end European autos, the M-Cylinder has more than 100,000 possible key combinations. These tumblers won't turn unless the key is properly inserted, protecting both the key and tumbler from damage due to misuse. The lock mechanism is also completely encased in ultra-hardened steel to resist drilling, picking, or pulling, while an integrated dust cover protects the internals from moisture and debris. As a bonus, the Bulldog DT includes a heavy-duty, extra-flexible 10mm steel cable, letting you double your protection or lock up another bike on the same rack. Other features include an all-tube, quick-release, multi-position mounting bracket, protective coatings on the cross bar and shackle, and a tough vinyl cable cover. The Bulldog DT comes with five laser-cut keys, one of which has an LED micro-light to help you open the lock after dark. OnGuard believes so strongly in the Bulldog DT that it offers an anti-theft protection offer of $1,501 for bikes and $501 for power sport vehicles.
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| Customer Reviews:
Showing reviews 1-5 of 68
 Solid so far... September 6, 2010
wings
This lock has kept my mountain bike safe around the Berkeley area for the past month. Usually I lock the back wheel and its brakes, then loop the cable through the front wheel and "2nd frame". My bike has a frame similar to [...] - so it is difficult to lock with the traditional locking techniques.
Other reviewers mentioned problems with the keys. I haven't had these issues yet, but I never force the key. There have been a couple of instances where the keys would not turn - usually the problem is from trying to lock the bike around something too large (slightly stretching the lock) or not having completely fitting the lock into the "U" part. Once I fix the problem the key turns easily.
You get five keys - one of them has a built in flashlight. You also get a code card. This lets you register your keys, then they can send you replacements if you ever need one. There is also an anti-theft offer, BUT you must register within 15 days by sending them your receipt for the lock and a receipt or appraisal of your bike value. There are a bunch of rules that also negate the anti-theft offer (must report theft to police in 72 hrs, lock must not have been broken by power tools), you can find the whole contract on the OnGuard Website.
Great U-Lock and Cable Combo! September 5, 2010
Gluteus Maximus (SoCal)
This u-lock and cable combination fit the bill perfect. It was only about $25 which I thought was a great price for a u-lock, cable, mount kit and 5 keys. I love everything about this except the fact that I wasn't able to fit it inside my frame to mount it. I would have to remove my water cage but I wasn't gonna do that either. So, I just toss this in my backpack along with the cable. There are other options to mount the u-lock but didn't like those options. The cable is pretty thick and just the perfect length to be able to loop my front wheel and through the seat and to the u-lock. At first it wasn't long enough but I ended up lowering my seat and that seemed to help. The keys they give you are pretty thick and are almost like a car key. They don't seem fragile but with force might bend when trying to open or close the u-lock. At first I was having problems with u-lock and keys. I noticed that if the U shaped part of the lock is not pushed all the way to the locking mechanism it will not lock. You might break your key if you force it. So after trail and error if you push it in all the way then you will not having any problems locking or unlocking. I lock my bike at the bus station and works well for my needs. I have seen some bikes with missing seats or missing front wheels. Before I would take my seat with me on my backpack and I would take my front wheel off and lock it with the back part. Overall I like the u-lock and cable and would recommend to anyone.
 Decent Lock August 23, 2010
AliB
This lock is pretty good. It's a little too short in length to fit both the rear wheel and frame around the bike post outside my local library, but it does fit with the frame. Also, the cable is just long enough to fit my 700c front tire. It came with a lot of keys, but the light up key doesn't work.
Good enough. August 20, 2010
JFG
I don't use the cable; the lock is heavy enough on its own. The mounting mechanism is truly awful, I had it mounted vertically and the plastic broke on it after maybe a month of using it. While it worked it worked just okay. I have a friend who mounted it horizontally though, and hers has held up. I've had it for almost a year now and I like the lock itself, I just wish I didn't have to lock it around my neck (handy that it's big enough to do this and I can lock up two bikes with it) put it in my bag or carry it in one hand. The tiny flashlight has actually come in super handy more than once and for more than just unlocking/locking my bike. The keys seem delicate, so I am cautious with them, but I haven't had one break on me. This one gets a 4, but if I could find a 5, I'd go with that next time.
 Don't buy, better options July 26, 2010
Adam
In case you have not picked this up already from the numerous reviews: DON'T BUY THIS LOCK ... I can think of few instances where using all caps is appropriate, but this is one. As others have noted already: The lock itself is solid enough, but the base of the lock cracked apart after a few months, and the whole thing rusts quickly, even if your bike is only very occasionally caught in passing rain (I store my bike inside my house). The key can sometimes get stuck, and it sounds like it gets permanently stuck for some. And the notches on the lock are not beveled at the corners so its very easy to ding your frame and chip the paint. The mount for the frame is cheap and locks onto your frame permanently with a ratcheting mechanism, and is a pain to take the lock on and off of.
In short, PLEASE PLEASE PLEASE learn from others mistakes, and spend the few extra dollars to buy a product from another manufacturer. You really will be happier with a different lock
Showing reviews 1-5 of 68
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