Brand OnGuard Model UNKNOWN Details Lowest Price ($20.85)

Average Rating

OnGuard Bulldog STD 5010LM Bicycle U-Lock
OnGuard Bulldog STD 5010LM Bicycle U Lock – Features
OnGuard’s best value U-lock with X2 Power Double Bolt protection. 13mm (0.43”) standard sized shackle offers solid security with many locking options.
X2 Power Double Bolt Locking Mechanism locks shackle on both sides
M-Cylinder resists all attacks from picking, pulling or drilling
Popular 115mm x 230mm (4.53? x 9.06?) shackle length
Hefty 13mm (0.51?) hardened steel shackle resists cutting, prying and jacking

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OnGuard Bulldog STD 5010LM Bicycle U Lock – Reviews

First the good news: it seems like a rugged lock and I don’t worry about it being defeated except by a determined pro with serious tools.

Now the bad news: there appears to be no way to remove the mounting bracket without destroying it. You mount it by tightening down a nylon strap across the bike tube with a ratheting mechanism, but, at least in my case, once you’ve tightened it down you cannot reverse the ratchet to loosen the strap. WTF? Perhaps that’s why almost all of the two-page instruction sheet is dedicated to finding the right position for the bracket and almost none of it is devoted to actually installing it? Because once you install it you will have to CUT THE *#$% THING OFF to remove it and it’s useless from that point forward?

Could it be that the ratchet is designed to reverse and mine was just defective? I don’t know, because the tech support people on their website never responded to the service ticket I submitted, and there is no mention of removing the brack
Sarah Alba

Product came with everything listed and works great! There were five keys and one with a light in cases that I lost my keys which happened to me and that is why I had to buy another bike lock. Fast service.

Robert Karash

Got this lock for my old-school Schwinn road bike in LA. It’s surprisingly lightweight, yet certainly large enough to lock around any pole & thick enough to deter thieves. I’ve never lost a key but it’s good to know I have several extras on hand just in case.

Sharon L. Berdine

I have bought this lock twice. First of all I live in LA so bikes don’t last very long even with a good lock. The last bike I had got stolen 1 hr after I had left it locked. I locked it with this lock but didn’t lock it to my apt fence (i put the bike inside) because I thought “cmon I’m only going in for an hour and coming out right away so why bother with the hassle, its not like I’m not locking it” and surprise surprise, little did I know that bike thieves would just lift my bike (it was a pretty light road bike >=[) and walk out the apt gate. I don’t really blame the lock but it is something to consider.

Ok. sorry back to the review. The lenght of the lock is ok. And it is a definite plus that it comes with 5 keys!!! one of them having a led light. the lock barrel turns so that you can cover the keyhole from dust and water. However, the locking mechanism is sometimes a bit heavy and doesn’t turn that smoothly but it is definitely not a problem.

Nancy C. Ward


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