Learn

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.

Learn

	Batteries Batteries are a key component of ebikes and all other electric vehicles and they have evolved and improved to a staggering degree since we first got into this scene in the early 2000's. Lithium batteries went from being a source of endless frustrations one of the most dependable parts of an ebike builds, all the while getting less expensive and longer lasting year after year. Unfortunately the webpage following this article is a legacy page from 10 years ago due for a rewrite
	Connectors There are lots and lots of connector types used in the ebike industry, so many that it would be a very tall order to try and list them all. In our business, we focus just on aftermarket conversion kits and have tried to keep the connector styles down to a well chosen minimal set. This page explains some of the connector models we use as well as others commonly seen on ebikes, but it is far from exhaustive.
	Hub Motors This page is a bit outdated from 2007-2009, but it has a lot of good information about Direct Drive and Geared hub motors. Other more recent information about our current line of motors can be found on our Hub motor Options page and why we prefer hub motors over all other motors on our Why Hub Motors Are Awesome page.
	Regen Use the power of your motor to brake and capture the energy to put back into your battery pack. An in-depth look at regenerative braking and how to activate it on your e-bike.