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PLEASE NOTE: Currently we are open for Telephone and Internet Orders Only

At present some suppliers are closed, and some deliveries may take longer than usual.

Telephone Hours will be 10am-3pm, Mon-Fri till further Notice. 

 *** GP-38 and DLE-65 Petrol Engines Now Instock << CLICK HERE>> ***

O.S. OS FSa-56 w/F-4040 Silencer [L-OS34300]  
RRP: £349.99
Our Price: 329.90 

The new FSa-56 from O.S. is the first engine in a completely new series of advanced four strokes. The FS ‘Alpha’ series draws on the experience gained from the Surpass range to develop and refine standards to a new level. The increased capacity compared to the FS-52 Surpass means more power/torque and the new carburettor provides even better throttle control across the entire RPM range! There are innovative features like incorporating the crankcase breather/oil recirculation system into the crankcase to dispense with external nipples and drain tubes as well as a dramatic & futuristic style. An effective and versatile silencer is supplied as standard.


Weight:419g/14.8oz w/o silencer
Capacity:9.32cc / 0.569
Propeller Range:13x6-7 12x6-8 13x6
Bore:24.0mm / 0.945in
Stroke:20.6mm / 0.811in
Power Output:1.0PS @ 10,000 RPM