Grin Kits

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.

Grin Kits

	Standard All-Axle Our regular All-Axle hub motor kits fit virtually all normal sized bicycles and trikes with both slotted and thru-axle dropouts. At 4kg they are among the lightest direct drive motors in their power class, with the rear models featuring an integrated torque sensor for simplified installation.
	Max45 All-Axle The Max45 motors have a wider stator than our standard motors and are correspondingly heavier (6kg) and more powerful. They are designed to fit all fatbike dropout standards. We also have a rear Max45 with threaded freewheel model for regular cruiser and chopper bikes that run a single speed chain.
	Dual All-Axle Dual motor systems are useful when extra power and hill climbing is needed. You can run dual front/rear motors on a normal bicycle, or dual single-sided front motors on trike and quad vehicles.
	Configure Step-By-Step Our new Kit Builder tool walks you through the process of configuring an All-Axle hub motor kit to match your particular bike and then puts all the required items in your shopping cart. This is a great option if you don't know where to start with our regular kit bundles. It currently supports just the Main9 display kits with the bidirectional throttles.