FSa-155

This is the largest engine in the flagship ‘Alpha’ series. The pumped fuel system deals with the demands of aerobatic fliers who demand consistent power in any attitude and is tolerant to variations in fuel tank location. With mounting dimensions identical to 1.20 class engines, fitting the FSa-155-P as a power upgrade is pretty simple. Finally, there is flexibility in the silencer mounting method through use of the optional exhaust headers combined with the standard silencer itself. With the legendary OS quality and longevity, it is easy to see why top pilots choose OS time after time.