SKU 669 · Bicycle Locks · ART 3-star certified · OEM & Private Label available
669 Bicycle U-Lock — ART 3-Star Certified
The 669 is an ART 3-star certified bicycle U-lock. The shackle is 15 mm in diameter with 85 mm inner width and 93 mm inner height, the shackle is made from 20CrMnTi steel and the lock body from 20Cr steel, with a zinc-alloy cylinder and three brass keys. Total weight is 590 g. The pictured configuration pairs an orange lock body with a black shackle.
- ART 3-star certified model — The 669 U-lock carries ART category 3 certification, held by our manufacturing partner. Certification details and applicable ratings are confirmed by model.
- 15 mm shackle with 85 × 93 mm inner clearance — Suited to locking a wheel plus a fixed object for standard city and commuter use.
- Steel shackle and body — Shackle in 20CrMnTi steel, lock body in 20Cr steel, zinc-alloy cylinder.
- Three brass keys — Three brass keys included per lock.
- 590 g — Compact enough to carry on the bike; each lock is packed in a mailer-style box.
- OEM and private label available — Branding, packaging and project requirements are coordinated with the partner factory per project.
Emily Qin · Sales Director · emily@ridingoutdoor.com · WhatsApp / WeChat +86 134 1076 4036
U-lock construction for city and commuter use
A U-lock locks a shackle through the wheel and into the lock body. The 669 uses a 15 mm 20CrMnTi steel shackle with 85 mm inner width and 93 mm inner height, a 20Cr steel lock body and a zinc-alloy cylinder. The pictured configuration pairs an orange lock body with a black shackle.
U-locks are used for quick stops where the bike is left unattended for shorter periods. Fit against your target wheel and locking point before ordering; specifications are confirmed against the partner’s documented capability before the model is quoted.
Technical specifications
| Model / SKU | 669 |
|---|---|
| Lock type | Bicycle U-lock |
| Shackle diameter | 15 mm |
| Inner width × inner height | 85 × 93 mm |
| Weight | 590 g |
| Shackle material | 20CrMnTi steel |
| Lock body material | 20Cr steel |
| Cylinder | Zinc alloy |
| Keys | 3 brass keys |
| Color | Orange lock body with black shackle (as pictured). Other color options subject to confirmation. |
| Packaging | Mailer-style box, 30 pcs per carton |
| Carton size | 46 × 35 × 24 cm |
| Gross weight per carton | 20.2 kg |
| MOQ | 500 pcs (documented configuration) |
| ART certification | ART 3-star, held by manufacturing partner |
ART certification for this model
This model is ART certified, with the certification held by our manufacturing partner. Certification details and applicable ratings are confirmed by model, and the certification does not replace market-specific or insurance requirements.
Using an ART statement or mark in your own branding is subject to the applicable ART registration and authorization requirements.
OEM and private label cooperation
For OEM and private-label projects we coordinate product specification confirmation, sampling, branding, retail packaging, quality checks and export arrangements with the manufacturing partner. Custom colors, custom packaging and other project-specific requirements are confirmed per order and per project.
ART 3-star marking on the lock body
The pictured lock body carries the manufacturer’s ART 3-star marking on the end cap, alongside the 669 model number — the certification is printed on the product itself as supplied by the manufacturing partner.
The ART category 3 certification is held by our manufacturing partner. Certification details and applicable ratings are confirmed by model, and the certification does not replace market-specific or insurance requirements.
Frequently asked questions
What does ART 3-star mean for this lock?
ART category 3 is the certification category recorded on the certificate for the 669 lock series, held by our manufacturing partner. Certification details and applicable rating are confirmed by model.
What size objects does the shackle fit?
The shackle is 15 mm in diameter with 85 mm inner width and 93 mm inner height; fit against your target wheel and locking point before ordering.
What is the MOQ?
MOQ starts from 500 pcs for the documented configuration.
How many keys are supplied?
Three brass keys per lock.
Is a mounting bracket included?
The documented configuration does not list a mount bracket; carrying and mounting options are confirmed per project.
Can we customize color or packaging?
The pictured configuration is an orange lock body with a black shackle, with mailer-box packaging; other color options and custom packaging are subject to confirmation per project.
What is the lead time?
Lead times are confirmed per order and per project.
Related products
Other confirmed models in the same sourcing program.
Commercial & programme information
The commercial terms that apply to this model. Where a figure is not published, it has not been confirmed and is agreed per project.
| MOQ | 500 pcs (documented configuration) |
|---|---|
| Pricing | Not published. Quoted per project after specification and destination market are confirmed. |
| Lead time | Not published. Confirmed per project. |
| OEM / Private Label | Available, subject to project confirmation |
Request a quote for 669
Send the target market, expected configuration and volume you are evaluating. We will come back with confirmed specifications, sampling steps and documentation status for the models you are considering.