The latest update to the Kugoo G2 Pro, the G2 Max has a larger 20Ah battery and is a 1000w rear wheel drive. Top speed is increased from 45-55km/h and its maximum range is 80km. Our experience of manufacturer specified maximum ranges is that you could expect to get about half that under real world riding conditions.
It's got the removable saddle, front and rear suspension and 10 inch off-road tyres. If you plan to use this in wet conditions, it's important that you get it waterproofed.