Review: The Abus U-Mini 40 U-Lock by Comparison

Review: The Abus U-Mini 40 U-Lock by Comparison

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For most of us, our locks are often overlooked. I give mine hardly any thought until the day I accidentally leave it home. That’s not to say I don’t have opinions about locks. Some are too garishly styled. Others have “sticky” keys. Still others have a shape or size I find too big or too small to work the way I’d like. But when it comes down to it, availability is generally what dictates what I ride with, despite using it every day.

When I sat down to review the new U-Mini 40 by Abus, I figured it was time to take a more critical (or at least more informed) look at the other locks I use as well. After a few weeks of riding with the Abus, I decided to compare it to the current versions of two other locks I’ve been using for years, Kyrponite’s Evolution Mini and OnGuard’s Bulldog Mini.

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Right off the bat, the Abus is a more intimidating lock. Both barrel and shackle look thicker, and it seems heavier in the hand as well. Because it is:

Abus OnGuard Kyrptonite
Width (A) 4 3/8″ 4 3/4″ 4 1/2″
Weight 2 lb, 4.3 oz 1 lb, 12.4 oz 1 lb, 14.9 oz
Shackle (B) 13.9 mm 12.8 mm 12.7 mm
Inside Length (C) 5 1/2″ 6 1/8″ 5 3/8″
Indside Width (D) 3 1/8″ 3 9/16″ 3 5/16″


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The lock mechanism itself is smooth. After a week or so of riding with it, I realized the only time I was doing the “key-jiggle” I was so used to with my other locks was when I inadvertently used the wrong key. With the right key in hand, using the lock feels like a step up from the others.

The barrel locks to both posts of the shackle, which means it does not employ the “hook” end on on side like the Kyrptonite does:

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I’m okay with this. The hook end can give you leverage in a tight spot, but also forces you to put the barrel in one direction (which can be a pain when the keyhole is off center like it is on the Kryptonite).

Overall, the Abus seems to fill a niche between these u-locks and the beefier Pitbull (OnGuard) and New York (Kryptonite) series locks, and the price reflects that at $60. If you’re looking for a little extra peace of mind or just a more “premium” feeling lock, this could be the place to find it.

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