The HB6GL motor is inner hollow tire, out diameter is 170mm(about 6.5inch).24v 250w 20km/h, 36v 350w 30km/h. This is a total black gearless hub motor with hall sensors, reversible, the dropout size is 65mm. We could customize it to mono shaft version too.
The motor has no mechanical braking, it needs controller has e braking function.
We also have the e braking controller and motor kit as follows, they are USD185 per set.