O.S. FSa-56 II with F-4040 Silencer


SKU: L-OS34330 Categories: ,

Latest version of this popular sized, high-performance four-stroke engine.

Features a black rocker cover to suit the appearance in scale models better plus a revised oil breather system. The breather now vents from the crankcase rather than being re-ingested in the inlet, to improve running consistency.

Weight: 394g (13.9ozs)
Capacity: 9.32cc (0.569cu.in)
Bore: 24mm (0.945″)
Stroke: 20.6mm (0.811″)
Power Output: 1.0PS @ 10,000RPM
Practical RPM: 2400 – 13000 RPM


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