Can I fold the Vika with the basket attached?
While you can add a Blix Front Basket to your Vika+ Flex in order to increase its utility, you will not be able to fold the bike all the way with the basket attached. This goes for any other baskets or accessories you may want to attach to the Vika+ Flex. Depending on your needs, this may be fine since the bike itself will still be smaller and take up less space. However, if you are needing it to take up the least amount of space possible, you will need to remove the front basket and any other large accessories that might prevent the bike from completely folding.
You can find instructions on how to install the Front Basket here; removing the basket will involve simply following the steps in reverse.