OS developed the Surpass Series of 4-cycle engines for discerning fliers who demand more power. All Surpass engines feature a helix gear driven camshaft on the front end and newly designed updraft carbs in the back. Enlarged intake valves and stronger working parts yield superior compression and improved output in the power stroke. OS Surpass 4-cycle engines provide the best performance for your plane, regardless of scale or flying style.
The FS-120 II Surpass is similar to the FS-120SP, but without the supercharger. Like the FS-120SP, however, it is equipped with a fuel pump and a special carburettor with built-in fuel pressure regulator to ensure maximum reliable performance under stringent contest conditions, irrespective of fuel tank position. Features OS Type PG-03 gear type fuel pump; Type C13 carburettor with built-in pressure regular; four ball bearings; and special propeller safety locknut assembly. Muffler and glow plug included.