NDakter Bike U Lock with 5FT Cable - Heavy Duty 4-Digit Combo Lock

In this review of the NDakter Bike U Lock with 5FT Cable the bottom line is simple: this is a practical, heavy duty security option for riders who want keyless convenience and a large locking footprint. The lock pairs an 18mm metal U-bar with a 12mm steel cable, and offers a resettable 4-digit combination plus two backup keys, so it is aimed at e-bike, scooter and bicycle owners who need extra reach and durability without carrying extra keys.

Key Features

• Resettable 4-digit combination: The lock offers 10,000 possible codes and a simple reset procedure so owners can set a memorable code without losing security.
• Backup key retrieval: Two included brass keys let you retrieve the code if you forget it, avoiding lockouts and added hassle.
• Heavy duty construction: The 18mm U-bar and 12mm steel cable add weight and resistance to cutting and sawing, making it better suited to e-bikes and scooters than thin locks.
• Large locking space: A roomy internal U-lock area and a 5ft cable let you secure multiple bikes, wheels, or helmets and reach around posts or racks.
• Weather protection: The U-bar is protected by a 1mm PVC layer to resist rust and prevent scratches to frames during regular use.
• On-bike carry: An adjustable bracket fits tubes up to 6.5in diameter so the lock can be mounted for transport while riding.

Who It's For

This lock is a good fit for riders with heavier bikes and electric scooters who want a balance of portability and stronger resistance to casual attacks; the weight and thicker metal make it a sensible choice for commuters parking in higher-theft areas. It also works well for people who prefer not to carry keys and value the keyless convenience of a combination system with backup keys.

Those who need an ultra-light solution for quick stops or who demand the absolute highest grade of commercial security should look elsewhere; this lock improves on standard cable-only locks but is not a hardened safe-grade chain for extended unattended storage in extremely high-risk locations.

Pros & Cons

Pros

• Sturdy feel from the heavy U-bar and thick steel cable gives better theft resistance than thin locks.
• Resettable 4-digit code with 10,000 combinations and two keys for recovery adds convenience and peace of mind.
• Large internal space and 5ft cable make it versatile for locking multiple bikes or reaching around large posts.
• Protective PVC coating prevents scratches and improves weather resistance.

Cons

• Weight is higher than light cable locks, which may be cumbersome for some riders to carry despite the bracket.
• Mountability received mixed feedback, so bracket fit and placement may require adjustment on some frames.

Specifications

Lock type	U-lock with steel cable
U-bar thickness	18mm
Cable thickness	12mm
Cable length	5ft
Weight	U-lock 1.095KG; combined 1.523KG
Combination	Resettable 4-digit (10,000 combinations) plus 2 keys
Bracket fit	Fits tubes up to 6.5in diameter

Our Verdict

The NDakter U Lock with 5ft cable is a solid midweight security choice for commuters and e-bike or scooter owners who want better anti-theft protection than a simple cable while keeping the flexibility of a long cable and a keyless combination. It combines useful features and durable materials at a reasonable value, but riders who prioritize minimal weight or need highest-security hardened locks should consider alternatives.

Frequently Asked Questions

Can the combination be reset?
Yes, the 4-digit code is resettable using the built-in reset button; follow the included steps to set a new code.

Are keys included?
Yes, two brass keys are included and can be used to retrieve the combination if it is forgotten.

Will it fit my bike frame for mounting?
The adjustable bracket fits tubes up to 6.5in diameter, but bracket placement and fit may vary by frame design.