3pole pairs or 6 N/S poles. 8 poles would have excessive electrical frequency core losses at >200mph, but 4 pole pairs gets heavier and more difficult to distribute flux to the edges, and torque ripple increases. That spoked hub structural topology is similar to the Zero IPM rotor structure, but scaled to match the 6 pole design.
They did a great job with the IPM segments not having shorted linking iron through the use of the carbon shell.
Im so grateful to be powered by three of these fine motor rotors on every driving trip I make.