AXA Defender

Almost every Dutch cyclist has used an AXA Defender at some point, often without realising it — the lock is factory-fitted to millions of Gazelle, Batavus and Koga bikes. It is a classic ring lock (sometimes called a horseshoe lock) that clicks through the rear wheel and blocks it from turning. The big appeal is convenience: press the pin in, pull the key, walk away. When you come back, push the key, the pin springs up, done. For a quick stop at Albert Heijn or a coffee at Bagels & Beans, that is exactly the kind of friction-free experience you want. Build quality is impressive for the price. AXA has specialised in ring locks for generations and you can feel it in the precision of the mechanism. The pin moves smoothly even after years of Dutch rain and road salt, and the housing is full metal with a neatly finished powder coat. ART-2 applies when the lock is mounted on a compatible frame using the original AXA bracket; retrofit mounts on older bikes do not always keep that certification. In practice this only matters when the ring lock is the only security your insurer evaluates.

And that is exactly where the big caveat lives: as a standalone lock, a ring lock is not enough for almost any modern bike. It only blocks the rear wheel, so a thief can simply lift the bike and carry it away or throw it in a van. In Amsterdam and Utrecht theft hotspots, that is a proven risk. For an e-bike parked outside, the Defender is really only acceptable in combination with a separate ART-2 or ART-3 lock that anchors the bike to a fixed object. AXA plays this smartly with an optional plug-in chain (the AXA RLC or Newton PI) that clicks straight into the ring lock and locks the bike to a post.

Honest on the weaknesses: 640 grams is pleasantly light, but you are getting literally half a security setup. Some Dutch insurers require both ART-2 and a separate anchoring lock in the policy, so read your fine print. For kids' bikes and cheap city bikes it is usually fine as the only lock, but for e-bikes over €1,500 we never recommend it on its own.