We have many front and rear hub motor options both as bare hubs and prelaced into rims. All are 3 phase brushless DC motors and require a motor controller to operate. The low power motors (Bafang and Crystalyte SAW/NSM) use a HiGo Z910 connector while most of the more powerful hubs are terminated with the L1019 connector. All of our direct drive hub motor offerings generally feature a built in thermistor for temperature sensing, 0.35mm laminations for low rolling drag, and are sealed with a Statorade injection port for extra cooling if required
For a more detailed explanation and comparison of the various motor options, see the Grin Hub Motor Kits info page.