Zéfal K-Traz U17 review

Surprisingly lightweight, this is one of the most affordable Sold Secure Gold locks available

Cycling Weekly Verdict

The Zéfal K-Traz U17 is really great value for money. It makes a Sold Secure Gold rated lock a lot of accessible and it tips the scales at a surprisingly low 1.28kg. The plasticky bike mount is a bit of a lowlight but at this price – and considering the otherwise great performance – this is easy to overlook.

Reasons to buy
  • +

    Great value

  • +

    Sold Secure Gold rating

  • +

    Significantly lighter than expected

Reasons to avoid
  • -

    Plasticky bike mount

  • -

    Straight shackle

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.

The Zéfal K-Traz U17 is a low cost Sold Secure Gold rated D-lock. It’s very lightweight for its size and price, and comes shipped with a bike mount — making it good for use around town as well as being a high security option at home.

>>>Read more: Best bike locks

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

Stefan Abram
Tech features editor

After winning the 2019 National Single-Speed Cross-Country Mountain Biking Championships and claiming the plushie unicorn (true story), Stefan swapped the flat-bars for drop-bars and has never looked back. 

Since then, he’s earnt his 2ⁿᵈ cat racing licence in his first season racing as a third, completed the South Downs Double in under 20 hours and Everested in under 12.

But his favourite rides are multiday bikepacking trips, with all the huge amount of cycling tech and long days spent exploring new roads and trails - as well as histories and cultures. Most recently, he’s spent two weeks riding from Budapest into the mountains of Slovakia

Height: 177cm

Weight: 67–69kg