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Kryptonite

Kryptonite Kryptolok Standard Bike U-Lock, 12.7mm Shackle, 4ft Cable

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Availability: 20 left in stock
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Arrives Saturday, Oct 10
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Size: 4" x 9" 12.7mm & 10mm x 122cm


Style: Standard_w_Cable


Features

  • BUILT TO LAST: The Kryptonite Kryptolok Standard ULock is constructed with a 12.7mm hardened performance steel shackle to help resist cutting and leverage attacks, while a durable vinylcoated protective sleeve prevents scratches to your bikes frame and preserves its finish
  • DOUBLE-DEADBOLT DESIGN: Locks the shackle on both sides of the crossbar for enhanced holding power and resistance against twisting and pulling. Certified by Sold Secure Silver, it also includes a highsecurity discstyle cylinder to resist picking and drilling
  • VERSATILE SECURITY WITH 4FT CABLE: Includes a heavy-duty 10mm x 4ft (120 cm) doubleloop security cable ideal for securing your front wheel, helmet, or accessories. Together with the Ulock, it is perfect for securing bicycles and ebikes at work, school, or around town
  • STANDARD, COMMUTER-FRIENDLY SIZE: This U-lock features interior locking dimensions of 4 x 9 (10.2cm x 22.9cm) and a total lock weight of approximately 3.65 lbs (1.66 kg), providing a versatile locking reach for thicker poles and racks. Weather-reated components help protect against rust and outdoor exposure for reliable everyday use
  • EASY MOUNTING BRACKET INCLUDED: Comes with a secure FlexFrameU bracket that attaches directly to your bike frame for hasslefree transportallowing you to carry the lock easily with no backpack or lock bag required
  • 2 STAINLESS STEEL KEYS INCLUDED: Comes equipped with 2 durable stainless steel keys, ensuring you always have a reliable backup on hand. It is also fully backed by the Kryptonite Key Safe Program for easy key replacement if you ever lose one
  • ANTITHEFT PROTECTION & LIFETIME WARRANTY: Eligible for Kryptonites AntiTheft Protection Offer (ATPO) with coverage for registered locks. Kryptonite also offers a limited lifetime warranty and dedicated Customer Experience support, ensuring total peace of mind and product quality

Description

The Kryptonite Kryptolok Standard U-Lock features a 12.7 mm hardened performance steel shackle with a double deadbolt anti-rotation design that resists bolt cutters and twisting leverage attacks. The lock’s disc-style cylinder with center keyway is protected by a vinyl coating and is pick and drill resistant. The keyway also features a sliding dust cover to protect the cylinder from dirt and debris when not in use. It includes two stainless steel keys with an ergonomic design to reduce torque and keep them from bending or breaking. Rated at a 6 / 10 on our security scale, the Kryptolok Standard is good for quick stops in a metropolitan area, a couple hours in the suburbs, or all day & overnight in rural areas. It also includes our patented FlexFrame-U Bracket providing convenient multi-location U-Lock transport. This lock is also bundled with a KryptoFlex 410 (4' 10mm) double looped braided steel cable for securing front wheel or accessoires. The combination of these great features and our support programs including Key Safe, Anti-Theft Protection, and Lifetime Warranty make Kryptonite Bicycle Locks the best choice for protecting what you value.

Brand: Kryptonite


Special Feature: Anti-Theft, Heavy Duty


Lock Type: Keyed Lock


Item dimensions L x W x H: 4.02 x 4.02 x 9.02 inches


Material: Alloy Steel


Brand Name: Kryptonite


Recommended Uses For Product: Security


Number of Pieces: 1


Included Components: 2 Stainless Steel Keys


Model Number: 001966 KryptoLok STD & KryptoFlex 410


UPC: 720018001966


Model Name: KryptoLok STD & KryptoFlex 410


Global Trade Identification Number: 66


Manufacturer Warranty Description: Limited Lifetime Warranty


Number of Items: 1


Manufacturer: Kryptonite


Number of Packs: 1


Unit Count: 1 Count


Item Type Name: Bicycle Lock


Manufacturer Part Number: 1966


Additional Features: Anti-Theft, Heavy Duty


Lock Type: Keyed Lock


Controller Type: Hand Control


Control Method: Touch


Style Name: Standard_w_Cable


Color: Black & Steel


Shape: U Shape


Material Type: Alloy Steel


Finish Types: Unfinished


Item Dimensions: 4.02 x 4.02 x 9.02 inches


Item Weight: 2.9 pounds


Item Highlight: Heavy Duty Anti-Theft Bicycle Lock with Mounting Bracket, 2 Keys & Disc-Style Cylinder, Sold Secure Silver Certified


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Oct 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • It’s great
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
The product you are showing is a Kryptonite brand U-lock, most likely a Kryptolok model, which includes an extra cable and a carrying bracket. Kryptonite Kryptolok U-Lock with Cable Review The Kryptonite Kryptolok is one of the most recognized bike locks due to its combination of security, durability, and ease of use. Here is a detailed review: Design and Construction The Kryptolok U-Lock is designed to be tough and reliable. The main body of the U-lock is made of hardened steel, making it difficult to cut with hand tools such as bolt cutters. Its size is suitable for locking both the bike frame and a wheel, providing excellent protection in urban or high-risk areas. Extra Cable The package includes a flexible steel cable that can be used to secure the front wheel or any additional accessories, adding an extra layer of security. While the cable isn't as robust as the U-lock, it's a useful addition to protect various bike components. Locking Mechanism The lock features a double locking system that secures both ends of the U-bar, increasing its resistance to twisting attacks. It also comes with two keys, which is handy in case you lose one. Carrying Bracket The included bracket allows the lock to be carried on the bike frame without any problems, which is ideal for cyclists who prefer not to carry the lock in a backpack or bag. It's easy to install and keeps the lock secure during the ride. Pros: • High resistance to cutting and theft attempts. • Includes an additional cable for added versatility. • Easy to transport thanks to the bracket. • Good balance between price and security. Cons: • The weight can be a bit high, although this is normal for locks of this type. • The cable is not as secure as the U-lock for protecting more expensive components. Final Verdict The Kryptonite Kryptolok is a solid choice for those looking for a high-quality, high-security lock for their bike, especially in combination with the additional cable. It is ideal for urban areas where the risk of theft is higher. ... show more
Reviewed in the United States on October 10, 2024 by Noelia rondon
    • Nice , it can lock up my 2 bikes and it’s weather durable .
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
I can review this based on the durability, as it has gone through rain, snow, heat and cold. As for holding up against what thieves could do to it; well… for that, I wouldn’t be the review for you to check. Ive had it for more than 3 or 4 years and well .. i still have it . I am able to lock my 2 bikes with one lock . ... show more
Reviewed in the United States on August 19, 2026 by Jonathan
    • Smooth lock
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
Great lock..Very smooth lock
Reviewed in the United States on August 11, 2026 by Donnie
    • Good but ATP warrant is NOT free
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
I like this lock, the sturdiness, and confidence they have in it. Right off the bat though, I was not happy that I was deceived about the "anti-theft protection warranty". It COSTS ADDITIONAL. I mean this makes sense, but the advertising was deceptive and perceived it to be included. In fact pretty much the only reason I spent more on this was because I thought I was getting that. I probably would have just bought a cheaper one if I realized. I do like the design and features, and the extra 4ft cable is a must for commuters. One other complaint is that sometimes the key doesn't seem to want to work. I cant quite figure out when it happens but I think sometimes If you start turning the key when it's not 100% inserted, it might turn part of the lock and then you get into this weird limbo where you can't open it even if you reinsert it all the way and keep wiggling it. Eventually it just opens with enough tries. This has only happened a few times and it eventually resolves itself, but still annoying. Like I said, I think it is probably carelessness when inserting the key, but still odd. Overall with my complaints, it is still a great lock, but perhaps a bit pricey. ... show more
Reviewed in the United States on June 4, 2019 by skylander
    • Easy to use.
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
Fits around my electric bike frame and tire. Use the cable to go around front tire and frame.
Reviewed in the United States on May 18, 2026 by JB
    • Bike Lock that Secures Your Mind
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
One of the most user friendly locks I've seen that leaves you without worrying if your bike would be stolen. Even though the width of the bar is thin it seems very dense which might help in case an unexperienced thief tries to break it. Unlocking this bike with the key that is given is easy and doesn't require that much of a struggle. All in all, its an affordable lock that gives you more than what you pay for. ... show more
Reviewed in the United States on August 10, 2025 by Max
    • Appears durable, maybe not best size for Lectric XP 3.0 though
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
We mounted these to our Lectric XP 3.0. Because of the awkwardness of the ebike frame, we should have went with a wider and/or longer lock. It isn't long enough to really lock a wheel real good, and isn't wide enough to secure the step through mid frame. This would be a good secondary lock for the XP 3.0, but not the primary. The supplied mount works great and keeps the lock in place when we travel. ... show more
Reviewed in the United States on December 20, 2024 by majorb98
    • Great lock! Use WD40 and teflon chain lube if it gets stuck/hard to turn key
Size: 4" x 9" 12.7mm & 10mm x 122cm Style: Standard_w_Cable
Review Image by Brett
This lock is so good. I'm coming from the Evolution model which I loved and secured my bike, but someone stole the entire rack it was locked to and the price went up so I went with this model lock instead. The mounting adapter that goes onto your bike is great! I keep the lock clipped to it as I ride around, the key goes on my key ring and it fits well and keeps my bike secure. I did have some trouble using the key or undoing the lock, so I sprayed some WD40 on the part that comes apart and in the keyhole. Then I used teflon dry bike chain lube on the same parts and in the keyhole, put the key in there and turned it a bunch. Now it works perfectly and is easy to lock or unlock! If you need a solid U-Lock with a bike frame mount - THIS IS THE ONE! ... show more
Reviewed in the United States on November 21, 2022 by Brett

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