When you ride your bike, insurance rides with you. For instance, if your bike is stolen, your homeowners or renters policy might cover replacement, though your coverage might have a dollar limit.
Read your policy or contact your agent to be sure.
If you bike often, you may want to ask your agent about liability coverage. If you cause an accident that results in property damage or injures someone, liability insurance could help cover costs you’re responsible for. If you have home or renters insurance, it likely includes liability coverage.