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Kryptonite Bike U-Lock with Braided Steel Cable, High Security Anti-Theft Bicycle U Lock, 12mm Shackle and 8mm x4ft Length Security Cable with Keys for Scooter Road Mountain Bikes

  • Based on 1,706 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jul 20
Order within 1 hour and 23 minutes
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Size: 4 Foot Cable/12mm Shackle


Features

  • HEAVY-DUTY BENT FOOT DESIGN: Constructed with a 12mm hardened steel shackle featuring a bent foot anti-rotation design that massively resists bolt cutters and twisting leverage attacks. It also includes a pick and drill-resistant disc-style cylinder with a sliding dust cover to protect the keyway from dirt and moisture
  • VERSATILE MULTI-FUNCTIONAL SECURITY: Includes an 8mm (5/16") x 4-ft (1.2m) double-loop security cable ideal for securing your front wheel or accessories. Together with the U-lock, it is perfect for securing bicycles, scooters, sports equipment, gates, fences, toolboxes, ladders, grills, and lawnmowers
  • COMPACT, COMMUTER-FRIENDLY SIZE: This U-lock features interior locking dimensions of 3.25 x 6.25 and a lightweight total weight of just 2 lbs. This provides a tight, secure fit around bike racks to deter leverage attacks while remaining incredibly easy to carry for everyday commuting
  • 2 STAINLESS STEEL KEYS INCLUDED: Comes equipped with 2 durable stainless steel keys, ensuring you always have a reliable backup on hand
  • LIFETIME WARRANTY & CUSTOMER SUPPORT: Kryptonite is committed to providing high-quality products and ensuring full satisfaction. This lock is backed by a limited lifetime warranty and a dedicated Customer Experience team ready to resolve any issues quickly, ensuring you can buy with total confidence

Description

The Kryptonite Mini U-Lock features a 12mm hardened steel shackle with a bent foot anti-rotation design that resists bolt cutters and twisting leverage attacks. The lock disc-style cylinder side keyway is protected by a sliding dust cover and is pick and drill resistant. It includes two stainless steel keys with an ergonomic design to reduce torque and prevent bending or breaking. Rated at a 4/10 on our security scale, this U-Lock is good for quick stops in a metropolitan area, a couple of hours in the suburbs or all day & overnight in rural areas. This lock is also bundled with a KryptoFlex (4' 8mm) double looped braided steel cable for securing front wheel or accessories. These great features, coupled with our support programs like Key Safe, Anti- Theft Protection, and a Lifetime Warranty, make Kryptonite Bicycle Locks the best choice for protecting what you value.

Brand: Kryptonite


Special Feature: Heavy Duty,Portable,Lightweight,Compact,Anti-Theft


Lock Type: Key Lock


Item dimensions L x W x H: 3.25 x 6 x 7.75 inches


Material: Alloy Steel


Brand Name: Kryptonite


Recommended Uses For Product: Security, Sports & Outdoor


Number of Pieces: 3


Included Components: Bike Lock, Keys, Cable


Model Number: 000648


UPC: 720018000648


Model Name: Kryptonite Mini 12mm U-Lock Bicycle Lock & 8mm Looped Bike Security Cable


Manufacturer: Kryptonite


Unit Count: 1.0 Count


Manufacturer Part Number:


Item Type Name: Bike Lock


Additional Features: Heavy Duty,Portable,Lightweight,Compact,Anti-Theft


Lock Type: Key Lock


Controller Type: Hand Control


Control Method: Touch


Style Name: Bike U-Lock with Cable


Color: Black


Shape: U Shape


Material Type: Alloy Steel


Finish Types: Painted


Item Dimensions: 3.25 x 6 x 7.75 inches


Item Weight: 1.9 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 20

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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Top Amazon Reviews


  • Good enough protection where I live
Size: 4 Foot Cable/12mm Shackle
I live in an area where bike theft is not very common, but I am sure if I left my bike sitting outside unlocked someone could take it. I got this bike lock because of the steel shackle and Kryptonite has a good name in locks. In other places I have lived I have had cable locks cut and my bikes stolen so I decided the U lock would at least take some time for someone to cut. They would also probably make some noise and alert people in my area. This bike lock is more their budget big box store brand. Think "Hey we want to sell these in Wal-Mart so lets make it a reasonable price" It's better than master lock, but can still be compromised with a skilled lock picker. If you live in a place where theft is high don't get this one. If you live in a place where crime rates are low and you will be locking your bike up for like an hour or so this should do well. In fact this would be a perfect lock for a kids bicycle at school. This will do well for most situations but if you have a nice bike in a busy city maybe opt for something with a bit more protection. ... show more
Reviewed in the United States on November 7, 2024 by Mark

  • Compact and easy to carry, Weather Resistance.
Size: 4 Foot Cable/12mm Shackle
This lock offers strong resistance against cutting, leverage attacks, and other theft attempts. It feels solid and durable, giving me peace of mind when leaving my bike unattended. The dual-layer protection of the U-lock and cable provides versatility for locking my bike in different configurations. The compact size of the U-lock makes it easy to carry, and the cable can be coiled up neatly. However, some users might find it slightly bulky for small bike frames. • High-security U-lock with a durable braided cable. • Compact and easy to carry. • Versatile for securing both bike frames and additional parts. • Affordable price for the level of security it offers. The Kryptonite Bike U-Lock with Braided Steel Cable is a solid investment for cyclists looking for reliable protection against theft. Its combination of a strong U-lock and flexible cable offers good security and versatility, making it suitable for most environments. While it may not be the most heavy-duty option on the market, it strikes an excellent balance between security, portability, and price. For casual riders or those locking up in moderate-risk areas, this lock is highly recommended. ... show more
Reviewed in the United States on January 27, 2025 by Winslet

  • Works great.
Size: 4 Foot Cable/12mm Shackle
Great bike lock. It makes me feel alot better about leaving my bike when I enter work. One thing I will say is it dose not work well with some bike racks if they are to low. But it is a high quality lock and im glad I bought it to protect my bike.
Reviewed in the United States on May 24, 2026 by Christopher

  • Stronger than the metal rack I was locked to
Size: 4 Foot Cable/12mm Shackle
My bike still got stolen but leaving 5 stars because the thieves had to break through the rack instead of the lock to take my bike 🙃. So back here to buy my second one.
Reviewed in the United States on February 27, 2026 by Lisa

  • Bang for ur buck!
Size: 4 Foot Cable/12mm Shackle
This model is the best bang for your buck! It's small, lightweight and comes with cable to ensure you can at least wrap around your bike and the wheels. I wanted to get. Kryptonite but it's like with so many models...it felt like either the lock was little value or really expensive. This lock is very affordable but still maintain all the features of more expensive lock model. It's ranked 7/10 which is pretty good without the higher lock price. ... show more
Reviewed in the United States on April 6, 2026 by Seng

  • Seguridad y garantía. Seguridad y garantía.
Size: 4 Foot Cable/12mm Shackle
¡Wow! Es un condado rígido y muy funcional para asegurar mi bicicleta. Se nota su seguridad con manipularlo. Recomiendo la marca y a Amazon como plataforma. Muy puntuales, llegan antes de tiempo. Me siento feliz con su logística de entregas.
Reviewed in the United States on April 17, 2026 Reviewed in the United States on April 17, 2026 by Jefferson Prias Moreno

  • Bueno
Size: 4 Foot Cable/12mm Shackle
Me gusta, todo bien hasta el momento.
Reviewed in the United States on May 2, 2026 by Santiago

  • No Bueno
Size: 4 Foot Cable/12mm Shackle
This is pretty lame with its short 8mm cable and the lock is sloppy. Clumsy to use! Going back to the Intekin at the same price with a substantial 6’ cable!
Reviewed in the United States on April 28, 2026 by EB

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