Originally developed for the Top Dutch Solar Racing team for the 2019 Bridgestone World Solar Challenge, this in-wheel motor features a coreless (ironless) stator and a dual Halbach-array radial-flux rotor. On its very first outing, it powered the team to a qualification lap time of 1:51.99 — a record that still stands today.

Since then, the motor has been continuously refined and improved, and is now available to all solar racing teams. At the 2025 Bridgestone World Solar Challenge, three teams competed with this motor – including the winning Challenger class entry.

Designed to fit common solar car wheels, the motor integrates mounting points for both a brake disc and caliper inside the rotor, allowing similar disc diameters across all wheels. Both stator and rotor are manufactured entirely from composite materials, minimizing weight while maximizing stiffness.

The motor offers a broad efficiency range, peaking above 97.5% between 10–15 Nm at speeds from 65 to 95 km/h. It is capable of delivering up to 100 Nm of peak torque when required.

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