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.

After your immediate family and hopefully your house, the third most precious item in your life will probably be your bike. However, keeping your pride and joy yours is always a heart lurching concern, especially when leaving the generally more secure  boundaries of your own home - which is where the Abus 440 Alarm U-Lock steps in.

>>> Best locks: a buyers guide 

Thank you for reading 20 articles this month* Join now for unlimited access

Enjoy your first month for just £1 / $1 / €1

*Read 5 free articles per month without a subscription

Join now for unlimited access

Try first month for just £1 / $1 / €1

Hannah Bussey

Hannah is Cycling Weekly’s longest-serving tech writer, having started with the magazine back in 2011. She has covered all things technical for both print and digital over multiple seasons representing CW at spring Classics, and Grand Tours and all races in between.

Hannah was a successful road and track racer herself, competing in UCI races all over Europe as well as in China, Pakistan and New Zealand.

For fun, she's ridden LEJOG unaided, a lap of Majorca in a day, won a 24-hour mountain bike race and tackled famous mountain passes in the French Alps, Pyrenees, Dolomites and Himalayas. 

She lives just outside the Peak District National Park near Manchester UK with her partner, daughter and a small but beautifully formed bike collection.