- The Klapprad must be at least 30 years old. Folding bikes like Birdies or Bromptons are not allowed.
- The Klapprad shall not possess gears or a duomatic gear. A suitable gear for Berlin can be mounted.
- Racing or time trial handlebars are absolutely excluded - use the original handlebars, or similar.
- Klapprad tandems are not allowed
- The use of click pedals is recommended
- Ideally, the Klapprad has mudguards, foxtail and a functioning lighting system
*In spite of this, ten of those taking part are female.