YASA has achieved what it claims is the highest power density ever recorded for an electric motor, delivering 550kW from a 13.1kg package in real-world tests. The 42kW/kg result nearly doubles the previous industry benchmark.

The breakthrough was achieved without exotic materials like cobalt-iron laminations, Litz wire, or 3D printing. This approach enables mass production scaling to 10,000-50,000 units annually at viable costs. The motor also demonstrates exceptional thermal performance, with continuous output expected to closely match peak performance.

Testing was conducted on standard equipment, with full-capacity dynamometer validation planned later this year. YASA describes this as the first of several technical breakthroughs planned through 2026.

The achievement is significant for electric vehicle development, where traditional automotive motors typically deliver 5-15kW/kg. YASA’s 42kW/kg performance could enable new vehicle architectures and enhanced capabilities across automotive, aerospace, and industrial applications.

The emphasis on production-ready technology distinguishes this development from laboratory demonstrations using unsuitable manufacturing processes. While unofficial, the result represents a major milestone positioning YASA’s axial flux technology as potentially disruptive across electrified applications.

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