The I155 is a 70% I unknown composite motor from Contrail.
| Average Thrust: | 155.3320 N | 
| Certified By: | Tripoli Rocketry Association | 
| Class: | 70% I | 
| Delays: | 1000 seconds | 
| Diameter: | 38.0000 mm | 
| Length: | 711.2000 mm | 
| Letter: | I | 
| Manufacturer: | Contrail | 
| Name: | I155 | 
| Peak Thrust: | 222.4110 N | 
| Propellant: | APCP | 
| Status: | In-Production | 
| Thrust Duration: | 3.5000 s | 
| Total Impulse: | 543.6610 Ns | 
| Total Weight: | 725.0000 g | 
| Type: | Unknown | 
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