Discontinued | This Item is No Longer Available

FS-120 III Surpass Ringed 1.20 4-Stroke with Pump

Item No.
OS Engines - OSMG0935
Selected Store

Building the 4-Stroke of the future, one engine at a time!

Surpass™ engines share features that include a helical gear-driven camshaft up front and a reliable rear updraft carb. Generous intake valves and CNC-machined parts add superior fit, power and compression. Rugged ringed pistons and ball bearing-supported crankshafts contribute smooth, trouble-free operation. Most also include rubber-sealed ball bearings, a reversible carb for easy installations and corrosion-resistant plating on the crankshaft, camshaft and piston.
  • High torque for spinning bigger props.
  • Quieter, more realistic airplane sound.
  • Generous with power — stingy with fuel.

Product Specs

Product Height
5.5" (139.5mm) crankcase botton to top of cylinder head
Prop Range
14.9 - 16x6
RPM Range
2,000 - 12,000
Cylinders
Single
Product Width
2.6" (67mm) at mounting tabs
Displacement
0.70 cu in (11.5cc)
Oil Type & Content
At least 16% synthetic lubricant
Product Length
5.3" (134mm) from carb to front of drive hub
Engine (Only) Weight
32.5 oz (921g) w/o muffler
Muffler Type
2-piece aluminum
Bore
1.20" (30.4mm)
Crankshaft Type
Threaded
Power Type
Glow
Plug Type
F
Stroke
1.08" (27.5mm)
Crankshaft Threads
UNF5/16 - 24
Muffler Weight
2.8 oz (79 g)

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