The J500ST (J500) is a 2% J reloadable composite motor from AMW.
| Average Thrust: | 502.9940 N | 
| Certified By: | Tripoli Rocketry Association | 
| Class: | 2% J | 
| Delays: | 20 seconds | 
| Designation: | J500ST | 
| Diameter: | 38.0000 mm | 
| Length: | 370.0000 mm | 
| Letter: | J | 
| Manufacturer: | AMW | 
| Name: | J500 | 
| Peak Thrust: | 787.3350 N | 
| Propellant: | APCP | 
| Status: | Out-Of-Production | 
| Thrust Duration: | 1.3000 s | 
| Total Impulse: | 653.8920 Ns | 
| Total Weight: | 744.0000 g | 
| Type: | Reloadable | 
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