OnGuard Bulldog STD 5010 Bicycle U-Lock

by OnGuard

Product Features

• 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
• Rounded design and centered keyway eliminates pry points. 5 Laser Cut Keys, 1 with a LED micro-light.

Product Description

Popular shackle length with X2 Power Double Bolt protection.

Product Details

• Product Dimensions: 12 x 7.5 x 2.2 inches ; 2.7 pounds
• Shipping Weight: 3.2 pounds (View shipping rates and policies)
• Shipping: Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
• ASIN: B000FL3E7K
• Item model number: 5010
• Average Customer Review: 3.0 out of 5 stars  See all reviews (24 customer reviews)
• Amazon Best Sellers Rank: #32,005 in Sports & Outdoors (See Top 100 in Sports & Outdoors)
  • #31 in Sports & Outdoors > Bikes & Accessories > Accessories > Bike Locks > U-Locks

Customer Reviews

Most Helpful Customer Reviews

32 of 32 people found the following review helpful:

4.0 out of 5 stars Good basic lock with distinct pros and cons., August 14, 2007

By 

T. Shih (Berkeley, CA) - See all my reviews
(VINE VOICE)    (REAL NAME)   

This review is from: OnGuard Bulldog STD 5010 Bicycle U-Lock (Sports)

This lock is pretty robust and has a solid locking mechanism. It's definitely a step above the previous Kryptolok STD which sells for the same price. (UPDATE NOTE: Kryponite has since updated the Kryptolok with the release of "Series 2". My comments reflect the original Krypolock only.)

Onguard comes with a bunch of keys (at least 4 spares + 1 LED key) and has a good locking system. (The Onguard is a double-lock where both ends of the U are secured by bolts) In addition, the lock cylinder of the Onguard lock is technically superior to the old Kryptolock's - not only is it deeper but each of the discs that comprise the locking mechanism can independently rotate, which makes the lock very drill resistant). Finally, the Onguard crossbar seems better protected than the kryptonite's - there's a bulky and relatively thick plastic housing that surrounds it.

The Onguard Bulldog comes with a rather limited but free 1-year protection plan in case your bike is stolen while being protected by select Onguard locks. (The kryptolock has a different protection plan.) The Onguard plan offers up to ~$1251 to replace your baseline bike (doesn't cover accessories or parts you added beyond the baseline) and is valid anywhere besides New York. The key limitation in the plan is that it only applies to locks busted by hand tools AND you must return the broken lock back to Onguard. Keep in mind that only the chain and u-locks have the protection plan.

I've never found a mounting system that I've liked so far, and the onguard lock-mount is no exception. The mounting ring on the U can freely rotate so even if you can position the lock perfectly, it can still swing about. Also, I've found that the lock mount mechanism is a quite tight so you'll really need to struggle with it to get it to work - Personally, I just throw my lock into my basket Topeak MTX Rear Bicycle Basket.

After about a year of ownership in Berkeley, I'll have to say the lock isn't super durable. The plastic end-caps on the crossbar section no longer stay on if the U isn't inserted - but this is merely cosmetic damage as it doesn't really affect the security of the lock.

In the end, it's a great lock for the money.

30 of 30 people found the following review helpful:

2.0 out of 5 stars Prone to jamming, April 21, 2007

By 

R. Stanchak (St Louis, MO) - See all my reviews
(REAL NAME)   

This review is from: OnGuard Bulldog STD 5010 Bicycle U-Lock (Sports)

I got this lock because of the price and recommendation in online forums [...]. On first impression, it was a bit heavier than my old kryptonite (circa 1997), though presumably more secure. The mounting hardware is certainly more robust (my kryptonite occasionally 'jumped' out on bumpy roads).

It has now been three months using the lock in Wash. DC, and yesterday, I could have said I was perfectly happy with it. However, today, it wouldn't unlock. The key turned and everything, but the mechanism would not release the lock! After awkwardly struggling with the locked bike in front of Starbuck's outdoor seating for around 15min. I gave up.

Later I came upon some advice at Onguard's website:
[...]

Basically, one needs to 'tap' the lock while turning the key to jar the mechanism to release. After 10 minutes of tapping with a hammer, I started 'hitting', and eventually that did the trick. In some experimentation, it appears that turning the key very quickly is also effective.

I plan to keep the lock for now, but if this happens again, it is going back to the manufacturer.

6 of 6 people found the following review helpful:

3.0 out of 5 stars Jammed Lock, April 16, 2008

By 

Han Jung Hsu (Los Angeles, Ca) - See all my reviews
(REAL NAME)   

This review is from: OnGuard Bulldog STD 5010 Bicycle U-Lock (Sports)

I've had this lock for a day now and the lock was jammed already. I locked this bike to a sign post and I couldn't unlock it afterwards. It took me well over 40 minutes to no avail so I went online to see how to get this thing opened. The other post that told said to "tap" on the key barrel is true, however, it's more like you have to hit it REALLY hard. If this ever happens to you, don't try to pull the lock because that won't work.

Other than that, this lock is super strong. I almost had to cut off the sign post to get my bike back!!