Is it possible to accessorize this bike with racks like the VoltBike Yukon?

We don't offer racks our fenders for VoltBike Outback. Because of the frame rear suspension it's difficult to mount regular rear rack or full size fenders. The best option is to get clip-on fenders or clip-on rear rack which mounts directly on the seat post. You can find these at many online marketplaces like Amazon or Ebay. Voltbike Outback is great full suspension electric bike which works well off road and adds extra comfort if riding in the city.