Comprehensive guides for building US-legal e-bike conversion kits. Learn about motors, batteries, controllers, and US federal regulations.
New to e-bike conversions? Start here to learn the basics of US e-bike classes and federal requirements.
Read Guide →Learn the differences between mid-drive and hub motors for your conversion project.
Read Guide →Our expert recommendations for the best e-bike conversion kits available in the US.
Read Guide →Understand US e-bike classes: Class 1/2 (20mph), Class 3 (28mph), 750W federal power limit.
Select motor, battery, controller, and accessories that work together and fit your bike.
Install components carefully, test all systems, and enjoy your new US-legal e-bike!
Get personalized kit recommendations based on your riding needs
Start Build Advisor