O.S. Engine OSMG0935 FS-120 Surpass III with Pump - Smooth-Running 4-Stroke Engine  [OSMG0935]

Balanced 4-Stroke Performance for Model Flying

Model flyers who want a dependable, smooth-running power unit will find the O.S. Engine OSMG0935 FS-120 Surpass III with Pump to be a capable choice. It is engineered to give even power delivery and manageable throttle control for a range of flying styles.

Pump Function and Muffler Benefits

The regulating pump design enhances consistency of fuel feed, which helps maintain stable running across throttle settings. The enlarged muffler reduces noise output while preserving efficient exhaust flow for steady combustion.

Built Components and Corrosion Resistance

Internal greasing of the rear ball bearing with rubber seals keeps contaminants at bay, and plated moving parts such as the crank and cam shaft plus the piston ring resist corrosion for extended reliability. The reversible carburetor and black rocker cover support flexible installations.

Overall, the FS-120 Surpass III combines sensible engineering and serviceable parts for flyers who prioritise steady, long-lasting 4-stroke performance.