Important!! Disc brake bolt specification

When installing disc brakes on your Unlimited eBike Kit, the bolts used to install the disc must be M5 with a maximum of 8mm long. Longer than this will make internal contact with the motor causing binding and damage!

If not using a disc brake, you can leave the sticker that comes from the factory to protect the motor from water ingress or use bolts to plug the holes, the length is even more critical here as the bolts will go in further without the disc or a spacer.