Other Kits

Other Kits

Bafang G31X Kits

The Bafang G310/G311 are the smallest, lightest hub motors we carry (~2.3 kg): a silent, discreet geared motor for light-assist ebike conversions, front or rear.

Shengyi SX Kits

The Shengyi SX1 and SX2 are medium-power geared hub motors: a step up from the Bafang G310, with silent helical gears and freewheeling for drag-free coasting. Built-in temperature sensing guards against overheating on long climbs. Fits slotted dropouts.

eZee Kits

Grin has sold eZee geared hub motor kits since 2007. An excellent torque-to-weight ratio in a light, quiet package, freewheeling for easy coasting. Fits slotted dropouts.

GMAC Kits

The GMAC is a geared hub motor with powerful regenerative braking, a rare combination: strong climbing torque plus regen, on a cassette freehub, for almost any frame.

Nine Continent Kits

The Nine Continent FH212 and RH212 are value-priced direct drive hub motors: silent, regen-capable, and durable, with a 212mm rotor for extra torque and a modern cassette freehub. Heavier at about 6.5 kg. Fits slotted dropouts.

Specialty Kits

Conversion kits for bikes and projects that don't fit a standard hub kit: Brompton folders, tandems, recumbent trikes, longtail cargo bikes, and other specialty builds.

We build complete conversion kits around a range of proven hub motors to suit different budgets, weights, and riding styles: our own lightweight GMAC geared motor, plus third-party hubs like the Bafang G31X, Shengyi SX, eZee, and Nine Continent, and specialty kits for folding bikes, tandems, trikes, and cargo bikes. Browse the families below to find the right fit.

Not sure which kit is right for your bike? Check the compatibility guide, compare performance in the motor simulator, browse real conversions in the project gallery, or if you're new to ebikes, start with our Start Here guide.