FSa-56II Airplane Engine with F-4040 Silencer (OSMG0957)

The FSa-56II Airplane Engine with F-4040 Silencer is a high-performance 4-stroke powerplant designed for 40-size model aircraft. Mounting this engine in your plane taps into OS’s advanced four-stroke technology, delivering a higher performance ceiling for sport flyers and a more realistic feel for scale flight, all while offering a rich, deep engine tone that enhances the flying experience.

For practical fit and reliable operation, it mounts in the same space as the FS-56a with no modifications. Blow-by oil exits through the breather nipple on the back plate for stability, while black rocker covers provide a bold look. The F-4040 silencer can be positioned to achieve the ideal fit, letting you tune sound and performance to your model.