The 1,000 watt Sondors Motor Upgrade is a complete rear wheel, with motor and 35A controller. Note that most Sondors bikes can also accept a drop-in 750 watt Bafang motor, which is also a very good choice.
The complete motor kit makes sense if you need a new rear wheel, otherwise it's simpler and more cost effective to drop-in the Bafang 750 watt motor. It can be purchased here: https://boltonebikes.com/collections/motors-and-kits/products/1500-watt-sondors-motor-kit-upgrade-preorder
Many people have asked if this motor kit is compatible with the RadPower bikes, such as the RadRover. Although the wheel assembly can work, the controller included is not setup for the RadRover. The motor is also NOT a direct drop-in replacement. The Bafang motor however is a direct fit and is recommended instead. https://boltonebikes.com/collections/motors-and-kits/products/bafang-fat-bike-hub-motor
This motor kit is not compatible with the RadWagon, Radcity, or any of the other bikes with narrower wheels and frames.
Keywords: Rad Rover