Sonic X Samples In Production

Elaphe has reached a key milestone in Sonic X in-wheel platform development: production samples are complete and first units are scheduled for customer delivery in June.

Sonic X was built to solve one of the hardest problems in high-performance vehicle development: how to add serious electric performance to existing ICE or BEV platforms where space is too limited for conventional hybrid solutions. Packaged within 20 – 23 inch wheels — between the OEM brake disc and rim, compatible with large front-axle discs from 350 to 420 mm — it requires no changes to driveline, transmission, suspension or hub bearings, keeping hybridization NRE low. Each unit adds 400 kW and 1800 Nm peak torque per corner — up to 800 kW per axle — at just 26 – 30 kg extra unsprung weight per corner depending on the wheel size, with everything else on the vehicle untouched.

The hardware is the high-power foundation — but the real advantage is what Elaphe’s high-speed control software does with it. Elaphe Slip Control operates at 500 Nm/ms — 20 times faster than driveshaft-based eAxles — managing wheel slip, torque vectoring and brake blending at every corner, in real time. Gains: 15% higher longitudinal and lateral acceleration, 8% faster cornering speeds. Elaphe Vibroacoustics goes further: motors actively generate sound and vibration for authentic driving feedback, with no additional hardware.

Journalists who drove Elaphe’s systems during Winter testing put it plainly. MotorTrend and evo called the behaviour “smooth and predictable” with “responses clean and clipped with no overshoot.” InsideEVs called it “like entering a physics cheat code,” concluding that “the most dramatic improvement might just come from some well-written code.”

Sonic X performance has been confirmed under demanding high-power conditions — consistent power delivery, excellent thermal management, no derating. Validation continues on two parallel tracks: on a purpose-built bench designed to simulate extreme conditions for the performance segment — including track-level thermal and power demands such as Nürburgring cycles — covering performance and thermal endurance; and for EMC, vibration and shock.

We will continue sharing our Sonic X journey on LinkedIn as the programme progresses, with first deliveries to follow.