I am deeply skeptical at the 450 mile range figure, after searching for more detailed specs. This Cycleworld article says that the manufacturer officially described the battery as "700V, 50 Ah" yielding 35 kWh.

450 miles is 742 km. So the efficiency needed for that range would have to be 48 Wh/km (aka 702 MPGe). But that's problematic, because that sort of efficiency is in the (higher end; ie less-efficient) territory of ebikes, which are lighter and have lower top speeds. In an odd coincidence, my Bikonit MD750 Class 3 ebike achieves 48 Wh/km when cruising at 45 kph (28 mph) and weighs 44 kg, with dual batteries summing to 1.5 kWh.

So how will this electric motorbike equipped with a substantial-larger and heavier 35 kWh battery pack be able to achieve the same efficiency? Even accounting for the different testing regime -- US EPA cycle vs China CLTC -- there are significant questions here.

The Cycleworld article expresses similar doubts, suggesting a 333 mile range might be more reasonable. I agree, although even 65 Wh/km may be generous if this motorbike can't shave weight in other places beyond the battery pack.