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OS MAX FF 320 Four Cylinder

Quiet possibly the best model engine money can buy, the four cylinder FF 320 is a masterpiece of engineering.

valve-controlled four-stroke flat four-cylinder motor. Mounted on 7 ball bearings, with attached motor bracket.

    Twin opposing cylinder design self dampens vibration for smoother operation and longer engine and airframe life and minimizes vibration related damage to radio gear. The FF 320 is the the only ringed piston, flat four R/C engine available today.


A superb engine that will give years of trouble free life. It is after all an O.S.!


Item Number Manufacturer: 36410
Bore [mm]: 27,2
Width [mm]: 196
rpm range, approx.: 1800 - 8500
All-up weight [g]: 2100
Height approx. [mm]: 138
Stroke [mm]: 22
Cylinder capacity [ccm]: 4 x 13,26
Length to hub: 182
Output [kW / (PS)]: 2,94 (4,0)
Shaft thread:  



pdf To download a PDF of the parts listing please click here

Spares and Accessories for your O.S. Engine
If you need any spares or accessories for your engine that are not listed on the site please contact us for a price and availability.

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