Weight is the honest measure of how much steel a lock actually carries · review
A hardened steel folding lock at 85 cm (33.5 in) from a long-established German bicycle parts maker, supplied with three keys and a frame bracket, and the best-selling lock in this hub.
Our conclusion The default choice here. It is the one people actually buy, it reaches what a D-lock cannot, and it is stocked on every market we check.
Büchel is a German bicycle component maker that describes itself as having more than a hundred years in the trade, and the Sekura is its mainstream folding lock.
Hardened steel construction, 85 cm (33.5 in) total length, a supplied frame bracket, and three keys. The maker positions it for bikes, e-bikes, scooters, motorcycles, prams and trailers — a breadth that mostly tells you the lock is long enough to go round awkward things.
Eighty-five centimeters is the common length for a folding lock and it is a sensible compromise: long enough to take in a frame, a wheel and a normal stand, short enough that the folded package still clips to a frame without dominating it. The Toptrek in this hub is longer at 94 cm (37 in); the reach is better and the links are thinner.
No link thickness, and no independent grading. Several locks in this hub name a scheme — ART on the TITANLOCK, ADFC on the KOHLBURG — and this one does not. That is not evidence of weakness; it is an absence of the third-party statement, and we report the absence rather than filling it.
Read on the day this page was built: $86 at the American Amazon shop.
Read from Keepa on the day this page was last revised; stock and price both move without notice.
Prices quoted in this text were read on 2026-08-30. The live price is at the top of the page.
A listing is not an offer: the reference exists on these stores, availability changes daily.
| Length | 85 cm (33.5 in) |
|---|---|
| Material | Hardened steel, stated by the manufacturer |
| Keys | Three supplied |
| Mounting | Frame bracket included |
| Amazon reference | B01NBVNK93 (identical on 6 markets) |
| EAN | 4260231352552 |
Büchel states hardened steel and an overall length of 85 cm (33.5 in). The manufacturer does not publish a link thickness figure.
Three, which the manufacturer presents as the point — a lost key on a two-key lock leaves you one mistake from a cut lock.
7.5/ 10
The default choice here. It is the one people actually buy, it reaches what a D-lock cannot, and it is stocked on every market we check.
Everyday city parking where a serious deterrent matters more than a certified grading.
Specifications: the manufacturer sheet for bike gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.
14 mm (0.55 in) shackle · ADFC recommendation stated · 1.7 m (6 ft) cable
A large D-lock with a 14 mm (0.55 in) hardened shackle and an ADFC recommendation stated by the manufacturer, supplied with a 1.7 m (6 ft) cable for the front wheel and accessories.
Best for: Anyone leaving a bike in a city where theft is a real prospect, and who is prepared to carry the weight.
≈ $89
85 cm (33.5 in) folding · combination · 8 links · bracket
The combination-code folding lock in this hub — 85 cm (33.5 in), eight links on hardened rivets described as waterproof — for riders who would rather not carry a key at all.
Best for: Riders who share a bike, or who are tired of carrying and losing keys.
6 mm (0.24 in) manganese links · 5-digit combination · 3.2 to 4 ft · fabric cover
A combination chain lock in 6 mm manganese steel with a five-digit cylinder, a fabric cover and a dustproof cap.
Best for: A café stop or a daylight rack, or locking two bikes together
