The bracket of the Abus resisted the flex attack and lasted 3 minutes; the cut was not yet deep. A plastic cover protects the frame and wheel parts, the bracket is difficult to attach to the frame. Clear test winner!

Maximum resistance to attacks, excellent workmanship and a pleasantly smooth-running locking mechanism make this lock the first choice for the highest security requirements. The lock withstood all attacks. However, the rigid U-shape restricts flexibility when connecting.

If you are looking for the most secure bike lock for your bike or e-bike, you often only have the suppliers' security levels to guide you. However, these are neither standardised nor comprehensible. Stiftung Warentest offers more orientation. Our break-in tests in the laboratory show: You can actually rely on the locks with a high security level - but the best bike lock tested costs 300 euros, and...