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10 Best Kryptonite Bike Lock 2025 in the United States

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Our Top Picks

#1

Winner

Kryptonite Evolution Mini-7 Bike U-Lock with Cable, Heavy Duty Anti-Theft Bicycle U Lock, 13mm Shackle and 10mm x4ft Length Security Cable with Mounting Bracket and Keys

Rating
9.9
Chosen by1,126
Security Rating
Locking Mechanism
Portability

Most important from
13106 reviews

Security Rating
The build quality is excellent, and the lock feels super robust, which instills confidence in its security.
Locking Mechanism
The Mini-7 is quite stout and requires thieves to carry proper tools, acting as a strong deterrent.
Portability
Great size and frame mount options make it convenient for mounting to your bike.
Length
The shackle is small, making it tricky to lock in certain places, but the wire cable compensates for the reach.

The Kryptonite Evolution Mini-7 Bike U-Lock with Cable offers a robust solution for securing your bike and other valuables. Its 13mm hardened steel shackle and bent foot anti-rotation design provide strong protection against bolt cutters and twisting attacks, making it highly secure. The additional 4ft, 10mm thick cable adds flexibility for securing multiple items together, which is a nice touch for enhanced security.

The U-Lock's interior dimensions (3.25 x 7 inches) are sufficient for most locking scenarios, and the lock includes three stainless steel keys with an ergonomic design, ensuring ease of use. The sliding dust cover on the disc-style cylinder protects against dust and dirt, maintaining the lock's longevity and reliability. The FlexFrame-U bracket allows for easy and secure mounting to your bike frame, making it convenient to carry without needing extra bags.

However, the lock's weight of 3.55 lbs might be a bit heavy for some users, and its compact size (Mini) might limit its use in certain situations where a larger lock is needed. The Kryptonite Evolution Mini-7 is also eligible for the company's Anti-Theft Protection Offer, adding peace of mind with up to $2,500 coverage for registered locks. Additionally, the limited lifetime warranty and responsive customer service from Kryptonite ensure that you can rely on the product's quality and support. While it's a heavy-duty and secure lock, its weight and size may not be ideal for all users, particularly those looking for a lighter, more easily portable solution.

Rating
9.9
Chosen by1,126
Security Rating
Locking Mechanism
Portability

Most important from
13106 reviews

Security Rating
The build quality is excellent, and the lock feels super robust, which instills confidence in its security.
Locking Mechanism
The Mini-7 is quite stout and requires thieves to carry proper tools, acting as a strong deterrent.
Portability
Great size and frame mount options make it convenient for mounting to your bike.
Length
The shackle is small, making it tricky to lock in certain places, but the wire cable compensates for the reach.
#2

Kryptonite New-U New York Standard Heavy Duty Bicycle U Lock & Keeper 785 Integrated Chain Lock, 16mm Steel Shackle, 33.5-Inch, Black/Yellow, Grey, Purple, Red

Rating
9.8
Lock Type
Security Rating
Locking Mechanism

Most important from
9 reviews

Lock Type
Combining the U lock with the chain offers a highly effective solution for securing both the rear and front parts of the bike.
Security Rating
The locks have successfully deterred theft attempts, even in high-risk areas.
Locking Mechanism
Both locks feel very secure, and the key operation is impressively smooth.
Portability
The U lock mount struggles to handle the weight, often drooping from its position.

The Kryptonite New-U New York Standard Heavy Duty Bicycle U Lock and Kryptonite Keeper 785 Integrated Bicycle Lock Chain are designed to offer high security for bike owners. The New-U lock features a 16mm hardened steel shackle, which is highly resistant to hand tools, bolt cutters, and leverage attacks, making it a reliable choice for high-theft areas. The interior locking dimensions of 4” x 8” provide ample space to secure your bike frame and wheels to various fixtures. Additionally, the product includes an Anti-Theft Protection Offer with up to $4,000 reimbursement and a Key Safe Program for easy key replacement.

However, its heavy-duty construction could affect portability, making it less convenient for those who need to carry it around frequently. The U lock's heavy weight might be uncomfortable for everyday commuters who prioritize lightweight gear. On the other hand, the Kryptonite Keeper 785 chain lock features 7mm four-sided chain links made from robust 3T manganese steel, enhancing its durability and security. The patent-pending end link design and hardened deadbolt provide extra holding power and reduce vulnerabilities. It is 33.5 inches long, offering flexibility in securing your bike to various objects. This chain lock is also available in multiple colors, adding a touch of personalization.

While it is slightly more portable than the U lock, its chain might be cumbersome to handle and store. Both locks are suitable for various environments, including major metropolitan areas, college campuses, and rural areas, covering both quick stops and overnight protection.

Rating
9.8
Lock Type
Security Rating
Locking Mechanism

Most important from
9 reviews

Lock Type
Combining the U lock with the chain offers a highly effective solution for securing both the rear and front parts of the bike.
Security Rating
The locks have successfully deterred theft attempts, even in high-risk areas.
Locking Mechanism
Both locks feel very secure, and the key operation is impressively smooth.
Portability
The U lock mount struggles to handle the weight, often drooping from its position.
#3

Kryptonite Keeper 785 Bike Chain Lock, 2.8 Feet Long Heavy Duty Anti-Theft Bicycle Chain Lock with Keys for Bike, Motorcycle, Scooter, Bicycle, Door, Gate, Fence

Rating
9.6
Lock Type
Security Rating
Portability

Most important from
6938 reviews

Lock Type
The chain design makes it extremely easy to lock and ensures that thieves have trouble cutting it open.
Security Rating
Always kept my bike safe and secure. Easy to use. Built to last.
Portability
The lock comes with a spare key and is relatively light for a metal chain.

The Kryptonite Keeper 785 Bike Chain Lock is a robust choice for those seeking a reliable lock for bikes, motorcycles, scooters, and more. Its heavy-duty build, made from 7mm hardened steel with four-sided links, offers solid protection against cutting and leverage attacks. The high-security, disc-style cylinder is designed to resist picking and drilling, adding an extra layer of security. This lock also features a patented end link design that securely connects the chain to a hardened deadbolt, removing common weak points and enhancing durability.

Measuring 2.8 feet in length, the Keeper 785 provides a decent reach for securing your bike to various fixed objects. It also includes a protective nylon sleeve to prevent scratches and wear, which is particularly beneficial for maintaining your bike’s appearance over time. Additionally, the weather-resistant coating contributes to the lock’s longevity in various conditions. Portability is decent given its relatively compact size, although its weight of 3.50 lbs may be a bit heavy for some users.

The lock comes with two keys, and Kryptonite’s Key Safe Program ensures you can get replacement keys sent to you globally, which is a thoughtful feature for added convenience. It is rated 5/10 for moderate security, making it a suitable option for areas with low to medium risk of theft. For added peace of mind, Kryptonite offers a lifetime warranty and an Anti-Theft Protection Offer (ATPO) with coverage up to $500. While the Keeper 785 might not be the top pick for high-risk areas due to its moderate security rating, it stands out as a highly durable and thoughtfully designed lock for everyday use in safer environments.

Rating
9.6
Lock Type
Security Rating
Portability

Most important from
6938 reviews

Lock Type
The chain design makes it extremely easy to lock and ensures that thieves have trouble cutting it open.
Security Rating
Always kept my bike safe and secure. Easy to use. Built to last.
Portability
The lock comes with a spare key and is relatively light for a metal chain.

Buying Guide for the Best Kryptonite Bike Lock

Choosing the right bike lock is crucial to ensure the safety of your bicycle. With various types of locks available, it's important to understand the key specifications and how they align with your needs. This guide will help you navigate through the essential features to consider when selecting a Kryptonite bike lock, ensuring you make an informed decision that provides the best security for your bike.
Lock TypeThe type of lock is a fundamental aspect to consider. Kryptonite offers U-locks, chain locks, and folding locks. U-locks are known for their strength and resistance to cutting, making them ideal for high-theft areas. Chain locks offer flexibility in securing your bike to various objects but can be heavier. Folding locks provide a balance between security and portability. Choose a lock type based on where and how you plan to secure your bike most often.
Security RatingKryptonite uses a security rating system to indicate the level of protection a lock provides. This rating typically ranges from 1 to 10, with higher numbers indicating stronger security. For high-risk areas, opt for a lock with a rating of 7 or above. For moderate-risk areas, a rating between 4 and 6 may suffice. Low-risk areas can be secured with locks rated 1 to 3. Assess the theft risk in your area to determine the appropriate security rating for your needs.
Shackle ThicknessThe thickness of the shackle (the U-shaped part of a U-lock) is a critical factor in a lock's resistance to cutting and leverage attacks. Thicker shackles are harder to cut, with common thicknesses ranging from 12mm to 18mm. For high-theft areas, choose a lock with a shackle thickness of at least 16mm. In lower-risk areas, a thinner shackle may be sufficient. Consider the tools that potential thieves might use in your area when selecting shackle thickness.
Locking MechanismThe locking mechanism determines how the lock secures and how resistant it is to picking or drilling. Kryptonite locks often feature disc-style cylinders, which are more resistant to picking. Some models offer double deadbolt locking, which secures both ends of the shackle for added protection. If you are in a high-theft area, prioritize locks with advanced locking mechanisms. For lower-risk areas, simpler mechanisms may be adequate.
PortabilityPortability is an important consideration, especially if you need to carry the lock with you frequently. U-locks are generally more compact but can be heavier. Chain locks, while flexible, can be bulky and heavy. Folding locks offer a good balance of portability and security. Think about how you will transport the lock and choose one that fits your lifestyle. If you commute by bike daily, a lighter, more portable lock may be more convenient.
LengthThe length of the lock, particularly for chain and folding locks, determines how easily you can secure your bike to various objects. Longer locks provide more flexibility in where you can lock your bike but can be heavier and bulkier. Consider the typical locking locations you use and ensure the lock is long enough to secure your bike effectively. For U-locks, the internal dimensions are key to ensuring it fits around your bike and the object you are locking it to.
Weather ResistanceWeather resistance is crucial for the longevity of your lock, especially if you leave your bike outdoors frequently. Look for locks with weather-resistant coatings and materials that prevent rust and corrosion. This ensures the lock remains functional and secure over time. If you live in an area with harsh weather conditions, prioritize locks with high weather resistance to maintain their integrity and performance.

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