Bike locks
A folding lock, or a D-lock with a cable?
These are the only two locks in this hub whose makers name an independent body rather than a self-assigned figure. They then solve the parking problem in opposite ways: one goes around more, the other has fewer joints.
| Compared on | ART-certified folding lock, 100 cm (39.4 in) | Large D-lock with cable, 17 × 34.3 cm (6.7 × 13.5 in) |
|---|---|---|
| Format | Folding, 100 cm (39.4 in) unfolded | D-lock, 17 × 34.3 cm (6.7 × 13.5 in) outer |
| Independent scheme named | ART certification stated | ADFC recommendation stated |
| Reach around a stand | 100 cm (39.4 in) unfolded | 10.5 × 28 cm (4.1 × 11 in) internal clearance |
| Front wheel | Not published | 1.7 m (6 ft) spiral cable, 8 mm (0.31 in), included |
| Cylinder | Protected against dirt and drilling | Multi-disc, T-shaped two-chamber system |
| Weight | Not published | Not published |
| Listed on amazon.com | Yes | Yes |
A tick marks the better answer on that line only. Counting ticks does not decide the page — the two verdicts below do, because these products answer different questions.
The lock for awkward parking. A hundred centimeters reaches around thick posts and wide railings with the frame and a wheel inside, which a D-lock simply cannot do. TITANLOCK does not publish the ART level, and that is the part an insurer usually names — establish it before buying on that basis.
The lock for a bike parked in the same place every day. A 14 mm (0.55 in) shackle has fewer joints to attack than any folding lock, and the included 1.7 m (6 ft) cable covers the front wheel — the part most commonly left behind.
They are different things. ART is a Dutch testing foundation that grades locks by resistance time; ADFC is the German cycling association and its recommendation is not a graded certificate. Both are third-party statements rather than manufacturer adjectives, and we report both as manufacturer claims without verifying certificates.
Possibly, and it will say so by naming a scheme and a grade rather than a brand. Read your own policy before buying — an uncertified lock can void a claim regardless of how solid it is.
Neither manufacturer publishes a weight, so we will not guess. Weight is the honest measure of how much steel a lock carries, and its absence from both listings is a real gap.
100 cm (39.4 in) folding · ART certification stated · anti-scratch
A 100 cm (39.4 in) folding lock whose manufacturer states ART certification, with a protected cylinder intended to resist drilling and an anti-scratch coating on the links.
Best for: City riders whose insurer names a certification scheme, or who park a valuable bike in the same place regularly.
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
