The Best Bike U Locks of 2023

12mm Hardened Steel Shackle Resists Hand Tools, Bolt Cutters, and Leverage Attacks

Interior Locking Dimensions; 4" x 8"

Key Safe Program; Kryptonite will ship your first 2 keys for free, globally, in the event you lose them.

Anti-Theft Protection Offer; Up to $500 Reimbursement

Lifetime

Sport type: Cycling

Why Amazer U lock can keep your bike safe? Amazer U lock is made of 12mm hardened performance steel shackle and covered by a 3.85mm PVC coating(Total lock's thickness is almost 16mm). So it can resist cutting and leverage attacks. The PVC lining on the "U" prevents it from scratching bike paint job.

Keyless & easy to set combination: Choose Amazer U lock, no more lost keys! 4-digit set your own combination convenience allows for thousands of possible combinations. Prevent thieves use universal key to unlock your lock.

Dust cover: The combination is covered by a dust cover to protects and extends cylinder life.

Heavy duty lock offer your bike more safety: The lock's net weight is 1.817 lbs(0.824 kg). The shackle is made of steel, the cylinder is steel and made of solid zinc alloy. Whole lock is covered by quality PC material for good looking and keep your bike from scratching.

Lock size: 8.96 Inches(length) x 5.74 Inches(width) x 0.624 Inches(thickness) - Please note: Manual measurement for reference only.

【Double-opening Head】Our DINOKA heavy duty bicycle u lock is a double-opening head, The thief needs to break the bike locks on both sides at the same time to open it, which is safer than a single-opening head ulock. The lock cylinder of the bicycle is made of C-grade pure copper blades and has a precise structure to prevent various technologies from opening. In addition, the bike u lock is equipped with 2 rust-proof copper keys with a complex snake-shaped slot, which is safer to use.

【Sturdy and Durable】This bicycle lock is made of 16mm/0.63 inch (including 0.1 inches friendly silicone sleeve) hardened high-performance alloy steel, which can resist cutting and lever attacks. Our bike d lock will provide more security for your bike.

【Convenient to Lock】The bike u-lock heavy-duty comes with 4 feet/0.48in steel cable which is coated with PVC covering to provide a greater locking method to protect your bike, suitable for bicycles, motorcycles, electric bike, scooters.

【Portable Size】The size of the u lock for bicycle is 7.9 in * 5.1 in, which is the same size of a 9.7in tablet and is convenient to carry. In addition, come with a mounting bracket that is suitable for all-round tripods with a diameter ≤ of 1.18in (30mm).

【Package Includes】You will get 1*bike ulock, 1*4ft flex cable, 1*mounting bracket and 2*keys, it is very easy to install according to our instructions. If you have any questions, please contact us and we will get back within 24 hours.

【Premium Heavy Duty Bike Lock】 This bike lock comes with a 0.86 inch heavy duty shackle and has excellent heat resistant and hydraulic shear resistant. Equipped with a 0.10 inch silicone cover, it can prevents scratch well and provides excellent safety protection for your bicycle.

【Security and Anti-theft】The bicycle lock is built-in imported c grade pure copper look cylinder, which is certified to resist leverage attacks and provides excellent anti-theft performance, so that your bicycle can be protected with the best safety.

【Easy to Install and Use】The combination bike lock is equipped with a 0.45 inch diameter thick steel cable with a length of 4ft and a high-quality mounting bracket, allowing you to easily install and use it without additional tools. It is very user-friendly.

【Portable and Practical】The bicycle U lock size 7.87 × 6.29 inch, which is lightweight and convenient to carry and store. It is widely used in mountain bicycles, road bicycles, and folding bicycles, providing you with high-quality bicycle safety protection.

【Get Satisfied U Lock Bike Lock】Our combination bike lock set includes bike bock, keys, flex cable and mounting bracket for protecting your bike in all directions. If you have any dissatisfaction with anti theft bicycle lock, please feel free to contact us.

Lock size: 9.0 inches(length) x 5.7 inches(width).

Safety & save your money: Titanker U lock is made of 12mm hardened performance zinc alloy shackle and covered by a 3.85mm PVC coating. This 16mm Bike Lock which comes with 4-foot flex cable and Mounting Bracket provides you with high-quality bike security in all areas to save your money. The U lock weight is 0.8kg, the steel cable is 0.4kg.

Keyless & safety: With keyless design, no worry about key lost and forget to carry. Set your own 4-digit combination allows to prevent thieves use universal key to unlock your lock.

Heavy duty lock provide you with more safety: 16mm heavy duty shackle and cylinder is made of solid zinc alloy. Then it can resist cutting & leverage attacks, and provide your bike more safety.

Dust cover & durable: The combination is covered by a dust cover to protects and extends cylinder life. Whole lock is covered by quality PC material for good looking and keep your bike from scratching.

Outdoor heavy duty bike cable U-lock is best used as a bicycle lock

U-shaped steel bike lock with key; Includes carrier bracket for easy transportation

Bike lock features a hardened steel body and double locking shackle for superior cutting and prying resistance

Bike lock body is 6-1/8 in. (16 cm) wide, with 8 in. (20 cm) shackle length, 4 in. (10 cm) width and 1/2 in. (13 mm) diameter

Includes one u-lock bike lock, two keys

Affordable U-Lock Protection

Disc key for additional anti-pick protection

Includes carrier bracket for storage convenience

6-1/8-inch by 8-inchby 4-inch

Vinyl coating for weather and scratch resistance

13mm Hardended Max Performance Steel Shackle Resists Hand Tools, Bolt Cutters, and Leverage Attacks; 10mm Steel Looped Cable For Additional Security

Interior Locking Dimensions: 3.25" x 7" Cable Length: 4'

Key Safe Program; Kryptonite will ship your first 2 keys for free, globally, in the event you lose them.

Anti-Theft Protection Offer; Up to $2,500 Reimbursement for 1 Year Included. Protective vinyl coating

✔️ DURABLE ALL-WEATHER PROTECTION – Via Velo bike U-lock with hexagonal PVC cover resists corrosion from water, dust and dirt to prolong the life of your lock. All-weather performance means peace of mind and better security

️ ✔️ EASY AND STRONG TO LOCK YOUR BIKE – The bike lock with thickness(including rubber casing):14mm,9.84 in (250mm) x 5.51 in (140mm) U shack to lock and go! Locking your bike and your wheels with 10mm x 180cm cable, fast and easy with our quick, no-hassle system. Great bike safety tool

✔️ AMAZING CONVENIENCE AND SECURITY – 2 keys for convenience! The bike U-lock comes with 2 keys. One of them you can take and use in daily life and the other you can leave at home in case the trouble when you lose one carelessly

✔️ SIMPLY INSTALLING BRACKET ON YOUR BIKE – Convenient high-quality mounting bracket means your lock goes with you, Our bracket is suitable for bike tube:20-42mm. Pls refer to our picture to install the bracket Value for your money

✔️ WARRANTY AND CUSTOMER SERVICE: 3-year warranty applies to U lock for US, CA, UK, EU Cyclists, 90-day money back policy, 24-hour online customer service. If you are not satisfied with it, you get a full refund unconditionally. Rest assured

12.7mm Hardended Performance Steel Shackle Resists Hand Tools, Bolt Cutters, and Leverage Attacks; 10mm Steel Looped Cable For Additional Security

Interior Locking Dimensions; 4" x 9" Cable Length; 4"

Key Safe Program; Kryptonite will ship your first 2 keys for free, globally, in the event you lose them.

Anti-Theft Protection Offer; Up to $1,750 Reimbursement

STURDY & DURABLE: This bike lock is made of 16mm/0.63inch(including 0.1inch environmentally silicone cover) alloy steel which is cutting-resistant, leveraging-resistant, and drill-resistant. The bicycle lock will provide your bike with more safety.

SAFER: The lock cylinder of the bike lock is made by C grade pure copper blade, which has a precise structure to prevent technical opening. The bike u lock comes with 2 rust-resistant copper keys that have complex serpentine slots, it will be safer.

CONVENIENT USE: This bike lock comes with a 4feet double looped ends steel cable which is coated with PVC covering, and the whole diameter of the cable is 0.48inch. It will provide your bike with greater locking flexibility and better protection.

PORTABLE SIZE: The size of the bike lock is 7.68inch*4.9inch. Comes with a mounting bracket that is suitable for all circular tripod in diameter ≤30mm. With the portable size, you can put the bike u lock into your bag or mount it on the frame of your bike.

EASY INSTALLATION: The mounting bracket holder is easy to install which enables you to store your bike lock quickly when out on a ride. The silicone cover of u lock will protect your bike from scratches. And it will prolong the life of your u lock.