Evolution 80GX 80cc 2-Stroke Gas Engine (No Muffler)


This is the Evolution 80GX 80cc 2-Stroke Gas Engine. The Evolution 80GX is an 80cc gasoline power plant that has been engineered and manufactured specifically for giant-scale aerobatic airplanes. Its porting design provides very high power-to-weight and power-to-size ratios, while the rear intake design provides higher power outputs. Consumers interested in more power will be pleased to know the Evolution 80GX is among the most powerful in its class! In fact, the 80GX has been tested against the competition, and has been found to have considerably more power per cc than other comparable engines on the market. And, because this engine uses common mounting methods, it is easy to adapt to both existing and new aircraft designs. This purpose-built engine will give 33% planes the power for unlimited, aggressive 3D performance.

The new Evolution 80GX is a performance driven 80cc gas engine in the Evolution line of brutally powerful gas engines. Every Evolution gas engine is purpose-built for model airplanes. Superior porting technology, Walbro carburetors, ball bearing-supported crankshafts and modern electronic ignition systems are all hallmarks of the Evolution gas line. As with all Evolution engines, the 80GX engine is backed by Horizon Hobby’s unmatched customer service and quality assurance.


  • Best-in-class cylinder porting technology results in unequaled power
  • Field-proven, Li-Po-ready ignition system
  • Swings a 2-blade Mejzlik 27x10 at 6200 rpm
  • Perfect power to fly 27% to 33% 3D models
  • Incredibly smooth power for 22-30 lb 3D models


  • Type: 2-stroke gasoline engine
  • Displacement: 4.9 cu in (80cc)
  • Bore: 48.0mm (1.89 in)
  • Stroke: 44mm (1.73 in)
  • Cylinders: Single
  • Engine (Only) Weight: 2220g (78.3 oz)
  • Crankshaft Threads: M10 x 1mm
  • Benchmark Prop: 27x10 mejzlik @ 6,400
  • Prop Range: 26x10 to 27x10
  • Fuel: Gasoline w/oil mix 40:1
  • Mounting Dimensions: 204 x 90 x 161.5
  • Cylinder Type: Ring
  • Carb Type: Walbro

This product was added to our catalog on June 11, 2010.

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