More than 100 years ago, engineer Harry Weslake established a company that would go on to shape the world of high‑performance powertrains. The brand built a reputation for breakthrough combustion design and success across motorsport disciplines including Formula 1, Le Mans, offshore powerboat racing, and motorcycle competition.

Today, Avvron carries that legacy forward. The historic brand continues as our consumer‑facing identity, while Avvron advances its underlying technology into defence, aerospace, and next‑generation mobility.

Our latest development is an Opposed Piston Uniflow powertrain capable of running on low‑fire‑risk biofuels and heavy fuels. It delivers exceptional fuel efficiency and an impressive power‑to‑weight ratio and unprecedented high altitude loitering capability .
This engine architecture is suited to immediate deployment in marine and aerospace propulsion, with future potential as a range‑extender APU for Urban Air Mobility, as well as lightweight portable generators and pumps for disaster‑relief operations.

We’ve also brought our historic P‑series drone engines into the modern era, engineering them for today’s defence requirements. The updated platform delivers outstanding power‑to‑weight performance and improved efficiency, enabling higher payload capacity and extended operational range.

After a focused period of research and development, we are preparing our powertrain solutions for market introduction. Certification for general use is now underway as we move toward commercial deployment.