Kryptonite Kryptolok Series 2 Standard Bicycle U-Lock (4-inch x 9-inch) with 4-Foot Flex Cable

by Kryptonite

Product Features

• 4-Inch x 9-Inch

Product Description

Kryptonite Series 2 U-Locks offer a 13mm hardened performance steel shackle with classic bent foot design and a patented deadbolt locking mechanism.

• High security, pick and drill resistant disc-style cylinder
• Rotating dust cover protects and extends cylinder life
• 2 keys - new "I" keys for easier usage
• Includes versatile EZ Mount transportation bracket
• $1,500 anti-theft protection
• 13mm hardened performance steel shackle with classic bent foot design
• Patented deadbolt locking mechanism and offset key location
• Key Safe and Authentic registration and replacement program

Item Specifications
Lock Size	4" x 9"
Bracket Incuded	yes

Product Details

• Product Dimensions: 2.2 x 6.3 x 11 inches ; 3.4 pounds
• Shipping Weight: 3.5 pounds (View shipping rates and policies)
• Shipping: This item is also available for shipping to select countries outside the U.S.
• ASIN: B0010XTIB8
• Item model number: 720018999416
• Average Customer Review: 4.1 out of 5 stars  See all reviews (74 customer reviews)

Customer Reviews

Most Helpful Customer Reviews

169 of 175 people found the following review helpful:

4.0 out of 5 stars It's not bad for medium to low bike crime areas, April 25, 2009

By 

Bartok Kinski "A casual stroll through the lu... (Prague) - See all my reviews

This review is from: Kryptonite Kryptolok Series 2 Standard Bicycle U-Lock (4-inch x 9-inch) with 4-Foot Flex Cable (Sports)

Kryptonite STD U Lock seems to be a very decent lock but it still can be "infiltrated" by a knowledgeable master thief/master lock picker in probably under 1 hour time. I'm not too worried since it is sizable, hefty looking and very heavy (4 lbs), so it looks bigger than what I saw on other bikes in the bike rack and my bike is only valued at $500. Plus most bike thieves are just simple crooks with a few tools (a bike crook in public with a 20 Pound Sledge Hammer, hacksaw, 42-inch bolt cutters, 12-inch screwdriver, 20-inch crowbar, and claw hammer will be very obvious and suspicious working for one hour on a lock).

Most bike thieves have limited time, looking for an "easy" and quick target. If you beef up your security with the bulky Kryptonite STD U Lock, odds are he'll go for a bike with a cheap lock (cheap chain or cable locks are a certain way to get your bike stolen in the bike rack). Many bikes are stolen because they're not even locked ("I'll just be a sec!"). Many bikes are also stolen because the locks are used incorrectly or left open/unlocked by mistake.

Kryptonite STD U Lock. The keys are very flimsy and forged with cheap metal so I won't be surprised in 12 months that they snap or are damaged. The Lock holder (cheap plastic) didn't work on my bike as the Lock is too big to fit anywhere so I just snug it into my rear rack.

Comes with a cable (be warned, it can be cut quite easily so don't use it as a "main attachment" to a pole, bike rack, etc, just use it to secure your rear or front tires with the U Lock attached to a pole, bike rack, etc, or run the cable through both the seat and the rear tire with the U Lock fastened to a solid object).

You should use a cable lock ONLY to secure your front or rear tire to the bike frame or bike rack. ALWAYS attach the U Lock to a solid, fixed object (lamppost, pole, road sign, fence, bike rack, etc). A cable lock is NOT a primary security tool to secure your bike. Never rely on a cable to anchor your whole bike, it can take someone a few seconds to cut through a cable lock. Always use a high quality U-lock or hefty chain as your MAIN locking device and cables as secondary devices.

In spite of AT LEAST 5 known attempts by petty German bike thieves to break through the Kryptonite STD U Lock, it's held up and has been an eminent tool in my bike lock collection (my secondary cable/cheap Chain locks securing my front tire have ALWAYS been cut).

In all, it's not bad for medium to low bike crime areas but don't use it ALONE for overnight, expensive bikes, big cities, dangerous zones or in dark desolate areas where a thief can use high powered tools or torches.

If you need more Security (you also will need to put up with the hassle of more Weight) go for:

Kryptonite New York Chain With EV Disc Lock Chain

OnGuard Brute STD 5001 U-lock

Kryptonite New York Fahgettaboudit U-lock

OnGuard Beast Chain

57 of 65 people found the following review helpful:

4.0 out of 5 stars Good lock, scammy protection offer, April 23, 2010

By 

Mark in Tempe (Tempe, AZ USA) - See all my reviews

Amazon Verified Purchase

This review is from: Kryptonite Kryptolok Series 2 Standard Bicycle U-Lock (4-inch x 9-inch) with 4-Foot Flex Cable (Sports)

I like the lock. It's for a cheap ($100) bike. When I get a more expensive bike I'll buy the New York Std (yellow sleeve) lock.

I think the Kryptonite locks are a good value. But, the "protection offer" is almost insulting to my intelligence. You have to read the box carefully to realize you're only getting an *offer*, not protection. You can buy protection for 1-2 years. And, the terms of protection are so ridiculously tedious that you wonder why they even offer. The terms sound like they don't want you to use it.

Here's an example: You have to register your keys and serial number of your bike within 15 days. Why a time limit? I bought my lock before receiving my bike. Why should it matter to Kryptonite that I bought the lock 2-3 months ago?

Also, you can't transfer the lock/insurance to another bicycle. Why would Kryptonite care about that? Unless it's just a gimmick to sell more locks?

For a claim, you have to submit the broken lock. What if the thief takes the evidence with him?

I've heard that NYC messengers who ride expensive bikes buy two locks. They take one to a welder to cut/break. They register the keys (and buy protection) for that lock. They use the other other lock. If their bike is stolen, they submit the broken lock which they never used.

I can't blame them for doing that. Kryptonite sets the conditions that you almost have to do that if you want to protect a $1200 bike.

I would give the lock 5 stars. But, because of the fishy "protection offer," I only gave 4.

11 of 12 people found the following review helpful:

5.0 out of 5 stars Serves its purpose, September 3, 2009

By 

Katie (Santa Barbara, CA) - See all my reviews

This review is from: Kryptonite Kryptolok Series 2 Standard Bicycle U-Lock (4-inch x 9-inch) with 4-Foot Flex Cable (Sports)

This lock works well. It is a little heavy, and I could not attach it to my bike anywhere, so I carry it in my pack. The cable makes it much easier to lock my bike to various racks, and makes it so I can lock up my friends bike at the same time. I would buy this again.