Magnax claims it makes a peak power no less than 15 kW/kg, with the ability to produce sustained power at around 7.5 kW/kg. To bring that back to the motorcycle example, if you built a Magnax motor that weighed as much as a BMW S1000RR superbike of 2011 engine, you’d have yourself a 603-hp powertrain that could produce bursts of up to 1206 hp for short periods before overheating and needing to take it easy for a bit.

https://newatlas.com/magnax-axial-flux-electric-motor/54821/