Evolution 20GX 20cc 2-Stroke Gas Engine w/Muffler

This item is discontinued and no longer available for purchase. You may want to search our site for a similar item.
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Low Price: $289.99
Discontinued Online

This is the Evolution 20GX 20cc 2-Stroke Gas Engine. The Evolution 20GX 20cc small block gasoline engine was designed for .90- to 1.20-size airplanes, with features that include a standard beam mount and dimensions that allow it to fit anywhere you might use a .91- to 1.20-size glow engine. It’s remarkably lightweight, even with the ignition system and battery. With the included 2S LiPo ready electronic ignition and crankcase pressure type carburetor, easy starts and tuning are a breeze, getting your bird airborne in no time.

All Evolution brand gas engines are designed from the start to provide you with excellent performance at a fraction of your previous operating costs. We have painstakingly designed each engine to insure a hassle free experience without giving away anything in expected performance or durability.


  • Lightweight construction based on the Evolution® 91NX glow engine
  • Outstanding power and performance for demanding RC pilots
  • Gasoline fuel delivers low operational cost and simplicity
  • Lightweight electronic ignition provides easy starts and superior reliability
  • 2S Li-Po battery compatible ignition without a regulator provides long run times
  • Standard .91 size beam mount allows for traditional mounting
  • In-cowl muffler included
  • Single prop nut attachment allows the use of any stock propeller and convenience while at the flying field
  • Supplied with fuel tubing and filters that handle gasoline and the high operating temperatures of a gasoline engine
Type: 2-stroke gas airplane engine
Displacement: 1.20 cu. in. (20.00 cc)
Bore: 1.20 in (30.5mm)
Stroke: 1.10 in (27.9mm)
Cylinders: Single
Total Weight: 33.6 oz (958 g)
Engine (Only) Weight: 24.9 oz (708 g)
Muffler Weight: 5.2 oz (150 g)
Crankshaft Threads: 5/16-24
Benchmark Prop: 16 x 6 @ 8,850 rpm
Prop Range: 15 x 6 to 17 x 8
RPM Range: 1,800-10,000
Fuel: 87-91 octane gasoline (petrol), 20:1 synthetic
Muffler Type: Wraparound in-cowl muffler
Cylinder Type: Ringed/Steel liner
Carb Type: Regulated with Muffler Pressure

This product was added to our catalog on February 14, 2014.