| Catalog No. | O.S. Stock No. | Description | Optional? | Photo |
|---|---|---|---|---|
| OSMG4308 | 25101006 | Crankcase .50 FSR | ||
| OSMG4588 | 25102003 | Crankshaft .50 FSR | ||
| OSMG5312 | 25103104 | Cylinder Liner .50 FSR | ||
| OSMG7520 | 25103208 | Piston .50 FSR | ||
| OSMG3952 | 25105005 | Connecting Rod .50 FSR | ||
| OSMG7692 | 25106002 | Piston Pin .50 FSR | ||
| OSMG4120 | 25107019 | Cover Plate .50 FSR | Photo | |
| OSMG5524 | 24908009 | Drive Washer .40-.50 | Photo | |
| OSMG8024 | 23209003 | Prop Washer .40-.61 | Photo | |
| OSMG7944 | 23210007 | Prop Nut 1/4 .20-.61 | Photo | |
| OSMG8728 | 25113019 | Screw Set .50 FSR | ||
| OSMG6132 | 25114007 | Gasket Set .50 FSR | ||
| OSMG7480 | 25117009 | Piston Pin Retainer .50 FSR | ||
| OSMG3060 | 26731002 | Front Bearing .40-240 | Photo | |
| OSMG3096 | 26730005 | Rear Bearing .40-.50 | Photo | |
| OSMG2734 | 25104205 | Cylinder Head Heli .50 FSR | Optional | Photo |
| OSMG2548 | 71510009 | Drive Washer Puller | Optional | Photo |
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