The G20 is a 37% G single-use motor from Ellis Mountain.
| Average Thrust: | 19.9880 N | 
| Certified By: | Tripoli Rocketry Association | 
| Class: | 37% G | 
| Delays: | 3 seconds | 
| Diameter: | 29.0000 mm | 
| Length: | 149.0000 mm | 
| Letter: | G | 
| Manufacturer: | Ellis Mountain | 
| Name: | G20 | 
| Peak Thrust: | 46.6840 N | 
| Status: | Out-Of-Production | 
| Thrust Duration: | 5.4700 s | 
| Total Impulse: | 109.3370 Ns | 
| Total Weight: | 117.9000 g | 
| Type: | Single-Use | 
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