A frame lock at Black Friday is bought with three main points in mind: the opening of the hoop, which should allow the tyre and mudguard to pass through, the attachment intended on the stays, and compatibility with a chain or a plug-in cable. Many of the horseshoe locks on this page are available on discount, sold individually or in a pack with their chain.
Fixed firmly under the saddle, the frame lock slides a bow between the spokes of the back wheel: the bike can no longer roll, but it can still be lifted. It is useful for stops in front of a bakery or a school and becomes a proper lock once connected to a post with a plug-in chain, or accompanied by a chain lock or a U-lock. The details of the models and their installation are available on the bike frame lock page, which is open all year round.
Abus indicates the type of key with a suffix: R for retained key, NR for removable key. Its Amparo 4750XL, rated 9 on the home scale, offers a widened opening for very wide tyres.
Axa sells its Solid Plus with its fastening: the bow opens to 58 mm and cannot close while the wheel is spinning.
Kryptonite offers several versions of its frame lock, compatible with its plug-in chains and cables.
XLC pairs its Fantomas II with a plug-in cable, to attach the bike to a fixed point with the same key.
Last series lock models go to clearance, newer models to new arrivals. Other formats, U, folding or chains, are gathered in the bike locks of the Black Friday.
There needs to be enough space between the rear wheel and the stays, and preferably threaded inserts intended for this installation. Without them, an adapter strap or ties can work on many city frames.
It stops someone from riding away, but not from taking the bike. For a stop longer than a few minutes, link it to a fixed point with a plug-in chain, or add a U-lock.
A model with a large opening, for wide tyres and mudguards, and a high level of security. Some manufacturers offer a cylinder matching the battery lock: check with the bike brand.
No. The end must match the lock: preferably take the chain of the same brand, or a model declared compatible by the manufacturer.
No: Black Friday falls on a Friday, the one after Thanksgiving, but at Vélo-Store, the Black Friday discounts on horseshoes extend throughout November. In the meantime, measure the free space between the rear wheel and the stays.