You can change a bike’s registered owner in your My VanMoof account. In the menu, go to ‘My Bikes’ and access the "Who can ride [bike's name]" section. 

Clicking the cross behind the owner name triggers a pop-up asking you to confirm the removal of your ownership. After confirmation, the bike will be removed from your My VanMoof account and VanMoof App.

Once you've removed yourself as the owner of the bike, you'll receive an email with a new validation code attached. Please share this code with the new owner so that they can register the bike to their own My VanMoof account