Rank #9 in Best Bike Locks 2026: 10 Ranked, Diamond Beats Gold on Price
NDakter 18 mm Heavy Duty D-Lock with 3 Keys
Price and rating as shown on Amazon when we collected them. Both change.
The NDakter Bike D Lock sits at number nine in this guide, priced at £16.99 with a 4.7-star average from 760 ratings and a Best Sellers Rank of 15th in Cycling U-Locks. It is a U-shaped lock with a black painted finish, supplied with three keys according to the product bullets, and it quotes 18mm of steel — more than the 12mm claimed by the £18.03 Kryptonite Combo two places above it, which costs £1.04 more.
That 18mm figure is worth reading twice, and so is the wording around it. The bullet reads "the U-lock cable measures 18mm thick" — cable, not shackle — and no third-party security grade appears anywhere in the listing. The spec sheet disagrees with the bullets elsewhere too: it gives the lock type as Mortise Lock and the control method as Remote, and its Material field says Brass, while the bullets describe the steel body and a brass key. Everything on this page comes from the Amazon listing for this product, not from any test we ran.
How those 760 ratings break down
An average hides its own shape. This is the spread behind the 4.7 stars.
Specification
Exactly as published on the Amazon listing, field for field.
| Price | £16.99 |
|---|---|
| Rating | 4.7 out of 5 stars from 760 ratings |
| Claimed U-lock thickness | 18mm, as stated in the product bullets |
| Keys supplied | 3, per two bullets; the Included Components field lists only "Bike d lock" (as listed) |
| Material (as listed) | Brass |
| Lock type (as listed) | Mortise Lock |
| Control method (as listed) | Remote |
| Best Sellers Rank | 4,795 in Sports & Outdoors; 15 in Cycling U-Locks |
What buyers actually say
Quoted from customer reviews on Amazon
Verified purchase“Great lock, thick and heavy so not super easy to carry about but if you have panniers or back box youll be fine. Great keys as well, not small and fidly, more like a car key. I feel that the bike is secure and with the cable my wheels are also secured. Well worth the money.”
Verified purchase“Excellent for the price but can't say anything about safety”
What it is up against
The rivals it was ranked against in Best Bike Locks 2026: 10 Ranked, Diamond Beats Gold on Price.
Questions people ask
How thick is the NDakter Bike D Lock?
One bullet says the U-lock cable measures 18mm thick. The listing gives no separate diameter for the shackle itself, and no security grade is quoted for the lock.
How many keys come with it?
Three, according to the bullets, which suggest keeping two with you and storing the third at home or the office. The Included Components field lists only "Bike d lock", so the keys are not itemised there.
Does the NDakter lock carry a Sold Secure rating?
No security grade — Sold Secure or otherwise — appears anywhere in this listing. The claims made are for an 18mm thickness and a hardened steel hook and loop.
What does the specification say the lock type is?
The spec sheet lists the Lock Type as Mortise Lock and the Control Method as Remote. That does not match a keyed U-lock, which is what the bullets and the photos describe.
Does the NDakter Bike D Lock have weather protection?
Yes, per the bullets: the chain is encased in a nylon protective sleeve, the outer cover is silicone, and the zinc alloy cylinder has a dust cover. The finish is listed as Painted.
Where is the NDakter Bike D Lock made?
The Country of Origin field says China, and the manufacturer and brand are both listed as NDakter.
Comments
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