OS Engine GF-40R w/F-6040 silencer L-OS3AF00

RRP £1,019.99 £920.99

Availability: Available *

Note: Delivery costs are calculated at checkout depending on destination and order contents. Click for More Information

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Quick Overview

OS Engine GF-40R w/F-6040 silencer

* This product is not available from stock, the items will be backordered from supplier. Delivery will take between 5-7 working days & orders will be despatched when complete.


Ideal for aerobatic or scale aircraft, the 4-stroke GF40R offers excellent torque and a realistic sound, plus fuel economy and the fit and finish that O.S. is famous for. This version has been optimised for UAV use, so has a more durable exhaust valve seat and ballraced rocker arms for reduced wear and increased durability. Other features include a Walbro carburettor and an integrated choke rod guide that simplifies the installation. The GF40R includes a muffler, spark plug and ignition module.


Engine mounting system that matches that of the O.S GT33
Positive Crankcase Ventilation (PCV) system helps keep the model and the environment cleaner without blow-by gas and oil waste
Choke rod guide is integrated with the backplate for convenience
Includes a special Walbro carb and a compact, lightweight ignition module

Supplied complete with the new, highly effective F-6040 silencer.

Additional Information

Manufacturer OS


Weight: 1,378g w/Silencer & Ignition

Displacement: 39.96cc
Bore: 40mm

Stroke: 31.8mm
Practical RPM: 1,800 - 9,000