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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.

Due to the Lockdown we only have 1 member of staff working, but we are here trying our best to serve you.

Telephone Hours will be 10am-2pm, Mon-Fri till further Notice. 


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