Motor specifications and performance data
| Manufacturer | Loki Research |
| Common Name | J820 |
| Availability | regular |
| Impulse Class | J |
| Designation | J820-LW |
| Maximum Thrust | 1281.0N |
| Average Thrust | 840.0N |
| Total Impulse | 1108.0Ns |
| Burn Time | 1.30s |
| Total Weight | 1210.0g |
| Length | 330.0mm |
| Propellant Weight | 643.0g |
| Diameter | 54.0mm |
| Case | 54/1200 |
| Sparky Motor | false |
| Motor Type | reload |
| Propellant | Loki White |
| Delay Options | P |
Motor data sourced from ThrustCurve.org — the motor database for rocketry