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5 Best U Locks of 2025

Last Updated - 2025/09/15

1
Best Choice

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Alshaay

Alshaay Bike U Locks Heavy Duty Anti Theft, 20mm U Lock Bike Super Strong 12 Ton Shear Electric Scooter Locks Anti-Theft 4ft Steel Security Cable with Sturdy Mounting Bracket & 3 Keys

Alshaay

CA$44.99

More Details
Main highlights
- 【High Strength Material & Safety Performance】Alshaay heavy duty bicycle U lock is made of high-strength hardened steel material, matched a solid 0.74-inch shackle made of imported zinc alloy, with super strong 12 tons hydraulic shear, excellent tensile strength and impact resistance, can effectively resist external damage, such as shear, prying pressure, etc., and defend against all kinds of hydraulic shears and other tools
- 【Great Convenience & High Durability】This electric scooter lock is well-designed and usually suitable for a wide range of models and parking environments, which can flexibly adapt to the needs of different bikes. It is easy to install with a 1.2-inch non-slip pad to ensure a more comfortable and fit installation. With its excellent material and stable structure, it is not prone to mechanical failure or damage
- 【Friendly Design】This heavy-duty u bike lock with humanized design, the surface is covered with 0.1-inch silicone layer, which can effectively prevent scratches on the paint, ensure that your bike remains scratch-free, which greatly increases the aesthetics, and the U-lock is equipped with a dust cover, which not only protects the lock core, but also significantly prolongs its service life
- 【Easy Maintenance & Great Surprise】This 20mm U shape lock anti-theft is easy to maintain, avoid wet environment to prevent rust. Includes bike lock, keys, flexible cable and mounting bracket, compact design, easy to carry, great surprise for people who own mountain bikes, road bikes, folding bikes and so on, providing better bike security
- 【Anti-Theft Technology & Protection Ability】These bike locks heavy duty anti theft with outstanding pure copper locking core, diameter: 15.2 mm (0.6 inches), which is able to effectively resist leverage attacks with its advanced technology, providing more locking space and higher security, excellent anti-theft performance, improve overall safety, and give your bicycle the safest protection
CA$44.99
2
Best Value
10% Off

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

ROCKBROS
10% Off

ROCKBROS U Lock Bike U Lock with Cable Heavy Duty Bike Lock Bicycle U Shackle 21mm U-Lock 4 ft Cable Mounting Bracket Scooter Motorcycles Combination Lock 3 Keys Anti Theft

ROCKBROS

CA$44.09

CA$48.99
(10% Off)

More Details
Main highlights
- 【Fully Protection】: This bike lock features a hardened steel body and double locking shackle for superior cutting and prying resistance. The lock crossbeam has passed multiple quenching heat treatment processes to improve the hardness and strength, effectively resist any violent damage
- 【 Portable Size】:The size of the bike lock is 7.87 *6.3inch. Comes with a mounting bracket that is suitable for all circular seat post in diameter ≤1.38 inch(35mm). With the portable size, you can put the bike u lock into your bag or mount it on the seat post of your bike
- 【 Loop Cable &Versatile Use】:Comes with a 3.94 ft double looped ends steel cable, which has t PVC shell. The whole diameter of the cable is 0.39inch. There are 3 rust-resistant copper keys that have complex serpentine slots, keys are not easy to be coppied. This lock is strong to keep your bike ,sccoter or motorcycle safe
- 【 High Quality U Lock】:ROCKBROS bike U lock is made of 0.84inch (21.4mm)alloy steel( including 0.36inch silicone cover). The Lock features zinc alloy C grade lock cylinder, Which is leveraging-resistant, cutting-resistant, and drill-resistant. Also, the lock is able to resist 12 tons of cutting force. Even a smart thief , cannot do anything about it
- 【 Easy to Install】: Convenient mounting bracket ensures safe and compact storage when cycling, the lock does’t need to pack your lock in a separate carry case or knapsack. The silicone cover of u lock will protect your bike from scratches and it will prolong the life of this u lock
CA$44.09
CA$48.99 (10% Off)
3

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Sportneer

Sportneer Bike Lock: 17mm Heavy Duty Bike U Lock - High-Security Anti-Theft with 12mm x1.5m Steel Cable, 8''x5'' Compact Design, Includes Mounting Bracket for Mountain/Road/Folding/Electric Bikes

Sportneer

CA$32.99

CA$35.99
(8% Off)

More Details
Main highlights
- Versatile for Every Need: Use the Sportneer bike U-lock alone or pair it with the steel cable for extra protection—it's up to you! Ideal for securing bicycles, electric bikes, children’s bikes, sports gear, ladders, barbecue grills, lawnmowers, gates, and much more. Make sure to check the size for a perfect fit.
- Tough & Secure: Engineered with a zinc alloy lock core and a reinforced alloy steel lock head, this U-lock can withstand up to 12 tons of hydraulic shear force. It’s built to resist cutting, prying, drilling, and smashing—effectively deterring thieves.
- The Perfect Gift for Cyclists: Searching for a thoughtful gift? This U-lock is an excellent choice for family, friends, or cycling enthusiasts, especially those who need reliable bike security in public spaces. A practical gift that will truly "lock" in their appreciation.
- Portable & Durable: Built to perform, the Sportneer bike U lock features a 0.67in/17mm thick alloy steel shackle and a sleek polygonal body for serious security. Compact at 7.76×5.02in and just 1.64lbs, it’s tough enough to protect, yet light enough to take anywhere. The silicone-coated exterior guards against water, dust, and scratches—keeping your gear safe and stylish.
- Double Lock & Easy Mounting: The Sportneer bike lock comes with a 5ft steel cable that works with the U lock to secure your bike to fences, posts, or poles for added protection. It also comes with a convenient mounting bracket that fits bike tubes with a diameter of 1.02 to 1.5 inches (26mm to 38mm), making it easy to carry and access your lock wherever you ride.
- 2 Keys for Extra Security: Never worry about losing your key again. The Sportneer bike locks comes with 2 sturdy keys—one for everyday use and the other as a backup. Keep one at home or work, ensuring you won‘t be stranded without access to your bike.
CA$32.99
CA$35.99 (8% Off)
4

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Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Master Lock

Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D

Master Lock

CA$25.99

More Details
Main highlights
- Protective vinyl coating helps prevent scratching
- Integrated disc keyed locking mechanism for maximum pick resistance
- Hardened steel body resists cutting, sawing and prying.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit.
- Double locking shackle for superior pry resistance
- Carrier bracket included for easy transportation
CA$25.99
5

✖
Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer service level, popularity, trends and more. The rankings reflect our opinion and should be a good starting point for shopping.

Via Velo

Bike U Lock with Cable - Via Velo Heavy Duty Bicycle U-Lock,14mm Shackle and 10mm x1.8m Cable with Mounting Bracket for Road, Mountain, Electric & Folding Bike

Via Velo

CA$32.96

CA$36.00
(8% Off)

More Details
Main highlights
- SOLD SECURE BRONZE CERTIFIED – This Via Velo bike lock model is Sold Secure Bronze certified, ensuring that this specific lock meets industry standards for reliable protection during short trips and quick stops.
- MATERIAL QUALITY OVER THICKNESS – Our locks are crafted from hardened steel, emphasizing that bike lock security depends on material quality such as hardness, impact resistance, and cut resistance rather than just thickness.
- EASY AND STRONG LOCKING SYSTEM – With a 14mm thick U-shackle (insize 7.68 in x 4.56in) and a 10mm x 180cm cable, providing quick and easy locking for your wheels and accessories, but note that the cable is not designed to secure the bike frame itself.
- DURABLE ALL-WEATHER PROTECTION – The hexagonal PVC cover protects against water, dust, and dirt, extending the lock’s lifespan and delivering dependable performance in all conditions.
- CONVENIENT AND RELIABLE SUPPORT – Includes 2 keys for daily use and backup, a high-quality mounting bracket for bike tubes (20-42mm) – please refer to our pictures for installation. Note: The bracket is not suitable for larger bike tubes such as those on fat tire bikes.
CA$32.96
CA$36.00 (8% Off)

5 Best U Locks of 2025

Alshaay Bike U Locks Heavy Duty Anti Theft, 20mm U Lock Bike Super Strong 12 Ton Shear Electric Scooter Locks Anti-Theft 4ft Steel Security Cable with Sturdy Mounting Bracket & 3 Keys

ROCKBROS U Lock Bike U Lock with Cable Heavy Duty Bike Lock Bicycle U Shackle 21mm U-Lock 4 ft Cable Mounting Bracket Scooter Motorcycles Combination Lock 3 Keys Anti Theft

Sportneer Bike Lock: 17mm Heavy Duty Bike U Lock - High-Security Anti-Theft with 12mm x1.5m Steel Cable, 8''x5'' Compact Design, Includes Mounting Bracket for Mountain/Road/Folding/Electric Bikes

Master Lock Black Bike Lock with Key, Standard Size U-Lock for Bicycles and Other Outdoor Equipment, Anti-Theft Lock for Bikes, 8320D

Bike U Lock with Cable - Via Velo Heavy Duty Bicycle U-Lock,14mm Shackle and 10mm x1.8m Cable with Mounting Bracket for Road, Mountain, Electric & Folding Bike

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