Motorcycle insurance provides financial protection in the event of a motorcycle accident, loss, theft or damage. Motorcycle insurance includes liability coverage in case you are responsible for another person's injuries or property damage.
Out of 50 states, motorcycle insurance is required in 47 of them but not every state requires the same amount of coverage. Each has its own minimum requirements for bodily injury and property damage liability -- the amount a policyholder's motorcycle insurance company will cover.
It is not a state requirement to have full coverage (meaning at least the minimum state auto insurance limits plus physical damage coverages), but it's usually a requirement from your finance company or lender. This is why they have a say about what insurance coverages you obtain and maintain on the financed vehicle.