What are the main differences between the HD and the Ultra? Follow

The difference in the Juggernaut HD and Juggernaut Ultra is two-fold:

Power delivery:

The motor systems differ by the way they deliver power.

The HD uses a more basic system of cadence sensor(how often you pedal) whereas the Ultra motor uses a torque sensor (how hard you push on the pedal) and a cadence sensor. Thus, the Ultra motor delivers power with a more natural feeling.

The torque sensing is a more complicated system so, therefore, it comes with the added price tag.

Base Specifications:

The Ultra bikes have better base specs like standard hydraulic brakes and thru-axle rear hubs.