The OnGuard Bulldog Combo STD DT U-Lock provides dependable keyless protection for cyclists who want strength, flexibility, and everyday convenience. Its 13 mm hardened steel shackle helps resist cutting and leverage attacks, while the included 4 ft vinyl-coated braided steel cable adds versatility to secure both frame and wheels. The X2P Double Bolt mechanism locks both sides of the shackle to improve resistance against twisting and pulling attacks. A user-settable 4-digit combination system allows quick access without carrying keys. Rubber coatings help protect bike paint and finishes from scratches during transport or locking. Designed for commuters and daily riders, the Bulldog Combo STD DT offers balanced security and convenience for medium-risk urban environments. Includes an all-tube mounting bracket for easy on-bike storage. Dimensions: 115 x 230 mm (4.53 x 9.06").
The Yeknod (comprador verificado) –
Great Lock, No Keys!
I purchased this for my girlfriend when she started biking regularly, it seems like just an updated version of one I’ve had for a long time. Very sturdy, the only complaint I can think of is for some bikes it’s a little small, but we’ve rarely had problems locking up. The cable is very, very handy to have for wrapping around your back tire or frame, especially if whatever you’re locking to isn’t very accommodating. The entire thing is covered in a soft material so no worries about scratching your paint.As for the combo, that’s really why I buy these locks. I’ve heard stories of keys being duplicates, breaking, getting lost, being easy to defeat, etc. I don’t really worry about any of this with a combo lock. I do find myself wondering if anyone could watch me lock/unlock and learn my combo, but up until now neither my girlfriend or I has had that problem. We actually set the same pin for our locks so we can switch or retrieve one another’s bike in an emergency. Yes someone could cut through it, but that’s true of any lock if the thief wants it bad enough.
Sabbir (comprador verificado) –
Get it… It seems promising!
So, like other reviewers would say… It’s really difficult to actually rate a cycle lock unless you actually witness someone on CCTV trying to pick and dig at your lock… However, that being said, this lock looks the part – The yellow and black signifies “don’t mess with me” and seems to be an effective deterrent to potential thieves.I was skeptical about buying a lock with a combination system as I’ve read online how easy these are to pick… However, this lock doesn’t suffer the same flaws of ‘gaps’ between numbers… So if that is your worry – Then put your mind at rest knowing that the combination system is SO much more convenient than carrying around a set of keys.In terms of the way the lock opens up… it latches open from one end then easily comes off the other end which has a ‘curved’ insert… Seems much easier and convenient to lock in difficult positions.The cable it comes with is long enough to carry around without it going all over the place… But it’s quite difficult to position it around your front wheel…Now the most IMPORTANT part… For me, it was trying to find a lock that will come with a DECENT mount! – And On-Guard have ticked all the boxes in getting this right… It seems strong and sturdy, has a rubber piece to grip to the bike which won’t leave horrible marks that plastic ones do… is EXTREMELY easy to fit and the lock can mount literally anywhere to your bike and stays in place! I bought a ‘Masterlock’ before, and it was terrible… As is the ABUS holders in my experience. I’m also neither a fan of the flimsy piece of strap that comes with Kryptonite locks… Yes, I’ve played around with many locks until I found this one!I’m slightly concerned that there’s no ‘SOLD SECURE’ rating, it would have been nice if it has… or if it does, then I can’t understand why it’s not advertised on the lock, but having checked the sold secure website, this model doesn’t appear to be on there.All in all… Just had it a day so far, but seems perfect:- Great mount- Excellently convenient combination system as opposed to keys- Very sturdy and looks great too- Mounts to a bike and leaves space for a bottle cage… You can mount it on the back, on the side, wherever!- Great value for moneyBuy it, you’ll love it.
MrGoodSales (comprador verificado) –
I like it. does what it’s supposed to do without the need for a key.
I hate carrying keys, keys always find a way to poke me with a sharp end or starch my electronics or get lost, …. this lock is keyless, so awsome, secure, well made, convenient, and beautiful, works well, installs on the bicycle which the included hardware and easily and securely attached/detaches from the bicycle mount. my bike has not been stolen yet so it must be working fine. 🙂
Erwin Danneels (comprador verificado) –
I don’t understand why this got good reviews.
This is terrible quality. It is annoying to use as the alignment of the code is very finicky. The hinging of the one side is also laborious. The slider is very stiff. After one month the yellow plastic covering split open. After three months it got stuck, and that is fine with me, as I was sick of using this thing.
M Winters (comprador verificado) –
Works well!
This works really well for my 14 yo son’s bike. We don’t use the cable, just the u-lock. The kit comes with a mount which works really well with the u lock. My son uses it religiously, and thus far, his bike hasn’t been stolen. Additionally, it’s very easy on/easy off, as we use it in the garage to lock 2 bikes together each night for extra security.
scott kitzul (comprador verificado) –
Includes bike mount
It is very rugged
carlo pagliaricci (comprador verificado) –
Ok
Soddisfatto sia per come è fatto e per il momento fa il suo dovere. Ok Amazon
JG62 (comprador verificado) –
Solid security and good quality
The cable is nice and thick and coated. The lock itself is very robust. I have a couple of these units that I use while camping to lock up my grill and other valuables in camp. Also, use it to lock up my trailer and UTV when stored. My only complaint is that when you take the lock apart, it is not very apparent which way it is supposed to go back together. You end up trying a couple time to get it locked. Other than that I would highly recommend!
Axel K. (comprador verificado) –
Feels pretty cheap
Feels much cheaper than eg kryptonite
Auxi (comprador verificado) –
Súper seguro, cómodo y práctico
Me han intentado robar la bici varías veces y este candado me ha librado. He probado muchos y para mi es el mejor
Sam (comprador verificado) –
Solid security, use the anti theft program offer
This lock is simple to use, feels sturdy, and most importantly, gives me peace of mind. Whether I’m locking up outside a coffee shop or leaving my bike at the rack for a few hours, I genuinely feel like this lock has my back (and my bike).The combination mechanism is smooth and convenient, so no worries about misplacing a key. That said, one quirk with combo locks: you need to pay attention to how you position the lock. If the number dials are facing down when it’s secured to your bike, you’ll be doing some awkward neck yoga to read and align the digits. It’s a small but real annoyance – easily avoidable once you know, but worth keeping in mind.A surprising standout is the manufacturer’s warranty offer. Send them a $1 check, and they’ll reimburse you the cost of your bike if it’s stolen due to the lock being cut. That’s not just solid customer service, it’s a serious vote of confidence in their product.Overall, this U-lock delivers where it counts: ease of use, solid protection, and a little peace-of-mind policy that shows the company stands behind their gear. Just keep those dials facing up, and you’re good to roll.
waters (comprador verificado) –
Faulty bracket
I’ve ordered twice, both broke in the same spot. The end cap of the lock and the locking bracket
Error9312 (comprador verificado) –
Solid lock, misses on a few finer points
I’ve been using this lock a couple days a week for two years in a big US city, including the last 6 months on a nice bike that I bought new. It seems very solid and secure and no one has messed with the lock. It’s also pretty convenient to carry around on the bike frame, which makes me much more likely to have it and use it. It has given me a few consistent frustrations, though:1) In most cases I’m able to use the U lock to lock my frame and front wheel to a bike ring. It’s not wide enough to lock my frame and back wheel with the U lock, and day-to-day I don’t usually bother to carry the included cable to lock the second wheel. On a normal bike ring it’s usually a tight fit to lock both the frame and front wheel–for security this is a good thing, but for convenience of getting the lock on it’s a pain. If I try to lock to something unusual like a street sign or fence I often have to lock just the frame.2) Because it’s usually such a tight fit to get the lock on, the rubber coating on the U became a shredded mess soon after I started using the lock. The lock works fine, but it looks bad and sheds a bit.3) The lock is really convenient to carry on the bike frame with the included clip, but the clip is made from a soft plastic that keeps cracking and breaking when I lever the lock into the mechanism. OnGuard has sent me 2 replacement clips in two years and I’m about to request a third because the latest one just broke.4) As other reviewers noted, occasionally when the lock is on with a tight fit it’s hard to press the release after dialing in your combination. Hasn’t been a big deal, just need to play with the fit a bit and try again.