Elaphe unveils Sonic X in-wheel motor platform for high-performance EVs

Elaphe Propulsion Technologies has announced its new Sonic X in-wheel electric motor platform, designed for high-performance battery-electric and hybrid vehicle architectures with limited onboard space. The Sonic X system adds up to 300 kW peak (200 kW continuous) power per wheel with an additional weight of only 25 kg (55 lbs), fitting within standard 20 to 23-inch rims. Elaphe says that this approach reduces powertrain weight by 40% compared to a conventional dual-motor e-axle system.

The motors feature direct-drive, transmission-free motors paired with onboard silicon carbide inverters available in single or dual-unit packaging. The platform incorporates Elaphe’s high-speed control software directly within the inverter to handle electric motor operation, wheel slip management, brake blending and optional torque vectoring. For integration in hybrid vehicle configurations, the software can provide mechanical differential control.

Elaphe says its high-speed embedded traction control software can deliver 15% improved acceleration and braking performance and allows for 5% faster cornering speeds compared to traditional designs. The system accommodates large friction brake discs (350 to 420 mm diameter) and uses high-power brake blending technology for improved braking performance and shorter stopping distances compared to friction brakes alone.

The Sonic X platform will support an axle peak power of up to 1 MW and a peak axle torque of up to 9,000 Nm in rear-wheel drive applications. Its compact form factor—10% the footprint of conventional high-performance dual e-axle designs—is targeted at applications where onboard space is limited.

Automotive manufacturers can obtain samples of the Sonic X in-wheel motor system starting in the first quarter of 2026.

Source: Elaphe Propulsion Technologies