Abus 440 Alarm U-Lock bike lock review

With a solid shackle, U-Locks are a great bike theft deterrent on their own, but adding an audible alert in to the mix give the Abus 440 Alarm U-Lock the edge

Albus 440 Alarm U Lock bike lock
(Image credit: Hannah Bussey)
Cycling Weekly Verdict

The Sold Secure level 8 (silver standard) Abus 440 Alarm U-Lock is a fantastic bike theft deteriant, with a solid shackle and high level locking duel locking mechanism. Its weight and size does mean that it's not one for taking on long rides, but if your main concern is leaving your bike unattended, then it's one of the best on the market.  

Reasons to buy
  • +

    Alarm

  • +

    12mm Hardened Steel

  • +

    Duel lock

  • +

    Sold Secure level 8 (Silver Standard)

  • +

    Transportable

  • +

    Shackle length

  • +

    Easy to use

Reasons to avoid
  • -

    Weight

  • -

    Battery size

You can trust Cycling Weekly. Our team of experts put in hard miles testing cycling tech and will always share honest, unbiased advice to help you choose. Find out more about how we test.

There are several styles of bike lock available to you, including chain locks, folding locks and perhaps the most commonly used, the U or D-lock.

Regardless of the design, all of the best bike locks share a common goal - to keep your bike safe from thieves. And while it’s hard to find any lock that’s a match for an angle grinder, there are varying degrees of protection available to you, typically indicated by the lock’s security rating.

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