Weight is the honest measure of how much steel a lock actually carries · review
A folding lock that opens to 33.5 inches, made of hardened steel with anti-tamper rivets, with a frame bracket and a Sold Secure Silver rating.
Our conclusion The reach pick: less rated than the Mini-7, and much easier to use on an awkward rack.
A folding lock sits between a U-lock and a chain. The Foldylock Compact is the most common example on Amazon.com, with more than 3,400 ratings.
An open length of 33.5 inches, hardened steel, anti-tamper rivets, a frame mount, keys, a Sold Secure Silver rating, a 1 kg weight, and a 3-year coverage statement.
The Kryptonite Mini-7 on this shelf is rated Gold, the Foldylock is rated Silver. In exchange you get an extra 26 inches of reach and a lock that sits quietly on the frame. If you often lock to a thick post, a tree-lined rail or a fence, that reach decides the matter.
Think about your parking, not the lock. For an expensive e-bike left overnight in a city, go to a higher grade or use two locks. For a short stop or an office rack, this level is reasonable. Register the key number straight away, because a lost key is otherwise a real problem.
| Type | Folding lock |
|---|---|
| Open length | 33.5 in |
| Material | Hardened steel with Nylon 6 and glass fiber |
| Rating | Sold Secure Silver |
| Weight | 1 kg (2.2 lb) |
| Mount | Frame mount and carry case |
| Key | Keyed |
| Coverage | 3-year coverage stated |
| Model | FCBK-ON |
The two ratings here say no: Silver for this lock and Gold for the Kryptonite Mini-7. You trade grade for reach.
Seatylock says the bracket is designed for a quiet ride, and that is what the mount is sold on.
8.1/ 10
The reach pick: less rated than the Mini-7, and much easier to use on an awkward rack.
Same category, nearby prices, between bike gear. What remains is the specifications every one publishes — half empty, a column is no use.
| Model | Price | Rating |
|---|---|---|
| Seatylock Foldylock Compact folding lock, 33.5 in | $95 | Sold Secure Silver |
| KOHLBURG Large U-lock with cable, 6.7 × 13.5 in | $89 | Sold Secure Diamond, security level 15 of 15 stated |
| Kryptonite Evolution Mini-7 U-Lock with 4 ft cable | $83 | Sold Secure Gold |
| ABUS Bordo Big 6000K folding lock, 120 cm | $114 | ABUS level 10, for medium theft risk |
Riders who need reach around odd racks, with moderate theft risk.
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 · Sold Secure Diamond · 6 ft (1.7 m) cable
A large U-lock with a 14 mm (0.55 in) hardened shackle and a Sold Secure Diamond rating, supplied with a 6 ft (1.7 m) 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.
≈ $89.20
13 mm shackle · double deadbolt · Sold Secure Gold · 3.25 × 7 in · 3.55 lb
A compact U-lock with a 13 mm hardened shackle, double-deadbolt locking, a Sold Secure Gold rating and a 4 ft double-loop cable.
Best for: City riders who lock to a standard bike rack for hours.
≈ $82.88
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
≈ $14.39
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
