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On Guard Bulldog Mini DT Lock 5015


Currently unavailable.
We don't know when or if this item will be back in stock.
  • X2 Power Double Bolt Locking Mechanism locks shackle on both sides
  • M-Cylinder resists all attacks from picking, pulling or drilling
  • Smaller shackle and narrower crossbar save weight. 5 Laser Cut Keys, 1 with a LED micro-light.
  • Included 120cm x 10mm (4' x 0.39") fully coated, braided steel cable provides more locking options
  • Hefty 13mm (0.51") hardened steel shackle resists cutting, prying and jacking

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Product Description

Bulldog Mini combined with a 4 foot fully coated, braided steel cable for extra locking versatility.

Product Details

  • Product Dimensions: 10 x 8 x 3 inches ; 4 ounces
  • Shipping Weight: 2.8 pounds
  • Shipping: This item is also available for shipping to select countries outside the U.S.
  • ASIN: B004S55H7O
  • Item model number: 5015
  • Average Customer Review: 3.8 out of 5 stars  See all reviews (52 customer reviews)
  • Amazon Best Sellers Rank: #176,752 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
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Customer Questions & Answers

Customer Reviews

The product seems very sturdy and displays a higher level of design than other locks.
Danorou
This OnGuard is an x2 locking mechanism, much better than most similar priced Kryptonite locks.
Sven
It worked fine for that month or two, but suddenly last week the key won't work anymore.
Z. Chu

Most Helpful Customer Reviews

46 of 48 people found the following review helpful By Sven on June 19, 2011
Verified Purchase
This is a superb, well-built D-lock that is the perfect size for carrying on a bike.

The additional security cable comes in handy for securing the front rim or seat. I believe that OnGuard locks outperform Kryptonite locks dollar for dollar. A great example of that is the BIC pen trick of a few years ago where Kryptonite locks could be easily picked with a simple BIC pen, while OnGuard locks did NOT suffer from the same fate. OnGuard had and still has a more advanced locking mechanism. This OnGuard is an x2 locking mechanism, much better than most similar priced Kryptonite locks. The metal/plastic clip that carries the lock on the bike has been updated from OnGuard and works great. It has withstood a lot of abuse on my bicycle, is durable, and reliable.

As for the lock size, I think this is the perfect size and I have been able to lock my mountain bike at every location I have stopped. I would avoid buying a full-size d-lock as they are bulky, heavy, and make theft easier by allowing for bolt cutter leverage. The mini-DT has proven to be just the right size with minimal weight.

OnGuard D-locks are well worth the investment.

About Security:
Get a D-lock and avoid locking your bike with a cable lock, as cable locks are VERY easy to cut with simple cable/bolt cutters. And by very easy, I mean it takes less than 15 seconds to snip a cable lock and steal a bicycle. Get a good quality D-lock, the best of which are made by OnGuard. For high crime areas, most owners recommend buying multiple D-locks from different manufacturers. There is a video of an expensive Bianchi with five, yes 5, D-locks on it in NYC! Yes, they are necessary to prevent theft.
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12 of 12 people found the following review helpful By Roger on November 30, 2011
Verified Purchase
This OnGuard Bulldog Mini DT Lock 5015 provides an excellent level of security for its size and weight. As other reviewers have noted, the way to use this lock is to follow the method Sheldon Brown has on his website [...]. I owned and used a larger, "regular-sized" U-lock from OnGuard (I think the Brute?) before getting this lock, and my impression is that this lock is much sturdier and built better.

Also, the mounting bracket for this lock is the best mounting bracket I have ever used. The design on the bracket isn't like older clips that were secured with a nylon-strip. Instead, the bracket is secured in a clamp-like fashion with two screws, and keeps my lock in a stable position instead of swinging around. I wasn't planning on using the bracket, but after seeing it and installing it, I keep my lock on the bracket instead of in my backpack.

In terms of security, the lock is literally just big enough to go around a rack and my rear wheel. It is large enough to be usable with those wavy tube racks and the inverted U racks. But it's small enough so there is very little option for leverage for anybody who wants to steal my bike. The lock comes with 5 keys that are sturdy and small (the plastic part that you clip into your key ring is much skinnier than my previous On Guard keys, which helps to keep my key ring size down).

I don't actually use the OnGuard cable that came with this lock, since I have a Kryptonite one that I was using beforehand. The OnGuard cable is slightly thinner than the Kyrptonite one, but I doubt it's much of a difference since a cable cutter would work through both pretty quickly.

A couple of notes about me... I live in D.C. and commute around the city. I don't leave my bike outside overnight, only during the day.
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12 of 13 people found the following review helpful By Eagle on November 25, 2011
Verified Purchase
As this lock is the only lock I've purchased, I'm unsure of how it ranks in comparison to other locks. However, for the purpose of protecting my bike from being stolen, this product excels.

Just a few days ago I went to check on my bike and noticed that my cable lock had been cut. I didn't ride my bike for a little over a week so I'm unsure of when the person attempted to steal it. Looking at what remained of the cable lock, it appears that it took very little effort to cut it, which is reasonable considering it wasn't meant to be the main theft deterrent. Looking at the u-lock, there appeared to be no damage done to the actual lock or perhaps the thief didn't even attempt to break the lock. However, I noticed that the side of the bike frame where I had connected the u-lock to was partially damaged indicating to me that the thief did put in quite a bit of effort to break this lock.

As for the actual lock, it's fairly small and heavy. You might have a little difficulty locking up your bike as did I at first, but you'll soon figure it out. It's really strong and durable and looks and feels like it can withstand a lot of damage.

Since I now need a new cable, I decided I might as well buy another set of the On Guard Bulldog Mini DT Lock 5015.

That being said, I bought this lock to keep my bike from being stolen, which it did. So, I'd say this lock was well worth the purchase.
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9 of 10 people found the following review helpful By San Bruno,CA on February 21, 2012
Verified Purchase
Check your local Stores before buying. I found this @ Target for $19. Exactly the Same. Don't waste your money.
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11 of 13 people found the following review helpful By GameFreak1990 on June 30, 2011
Verified Purchase
Quality is excellent, can definitely tell the difference in quality to the usual xmart locks you get from regular stores. I am very impressed buy its quality, and when I'm riding around the street it just feels as if the lock demands respect haha. Man, its a pretty heavy lock for its size, could knock someone out if you ever have another bike troubling you, just kidding (but very possible).
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