Fully In-House Two-Stroke Powertrains: A Domestic Aviation Power Core

As the low-altitude economy develops rapidly and special-purpose equipment continues to iterate, demand keeps growing for power systems that are lighter, more reliable and adapted to a wider range of missions. FQ Engine develops its two-stroke powertrains fully in-house — from concept design and simulation through part prototyping and dyno durability testing. That in-house control is what allows consistency across production engines. The range now spans 120 cc to 730 cc, covering: - Compact single- and twin-cylinder engines for small UAVs and portable equipment. - Four-cylinder engines for long-endurance industrial UAVs and light sport aircraft. - Powertrain-level integration including propeller matching, exhaust and generator options. Every platform is dynamometer-tested and flight-verified, with worldwide technical support and genuine spare parts.