O.S. FS91 Surpass II-P OS L-OS35910 ss features a true pressurised fuel system. Similar to the new FS 120S-III the new FS 91-II P has a pump system that is capable of delivering constant fuel via the regulatory carburettor. It is therefore ideally suited to the emerging 90 size aerobatic models. Designed to be used with 11 x 10-11 to 12 x 8 propellers. If youre looking for constant fuel feed at any attitude this is the engine to choose. Supplied with an effective large volume muffler.
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