Getting Advanced

Every Grin conversion kit turns a regular bicycle into an electric one, built around a Grin hub motor with the matching controller, wiring, and options. Browse the kit families below to shop by motor.

Not sure what fits your bike? Build a complete kit step by step in our kit builder, compare performance in the motor simulator, or see real conversions in the project gallery.

Getting Advanced

	Solar Ebike Systems Harness the power of the sun! Solar panels are lighter and more affordable than ever. Learn how to use solar energy with your e-bike system to ride longer and farther without recharging your battery at an outlet.
	Dual Motor Drives Dual Motor and Multi-Motor drive systems allow you to get more power and torque than is available with a single motor. But they are also more complex to setup and wire.
	Wheel Building There are many good print and online references for lacing bicycle wheels. Many will defer to Sheldon Brown, Brandt's Bicycle Wheel Book, and others. However, a lot of the points and details with a conventional bicycle hubs don't necessarily apply to hub motors with their much larger flange diameter.
	Troubleshooting One of the things about meshing complex electrical and mechanical systems together is that occasionally things can go wrong! We've seen more than our fair share of ebike issues come and go over the years - from shot ball bearings, seized freewheels and stripped threads to defective hall sensors, blown mosfets and connector issues. We've learnt a lot along the way and continue to use this experience to help create more efficient and more reliable electric bikes...