Hi husler, welcome to NN.
The Ninja stickers can be removed easily. Best to use a regular hair dryer, warm them up a bit, and peel them back carefully. As for the Kawi name on your tank, that has been clear-coated over. If you want that removed you have to go through the clear coat so in the end you'll need to refinish, or possibly even have to paint the tank after.
The Ninja stickers can be removed easily. Best to use a regular hair dryer, warm them up a bit, and peel them back carefully. As for the Kawi name on your tank, that has been clear-coated over. If you want that removed you have to go through the clear coat so in the end you'll need to refinish, or possibly even have to paint the tank after.