ENGINE CRANKSHAFT THREAD SIZE
| ENGINE | SIZE | DESCRIPTION | CRANKSHAFT THREAD | ENGINE | SIZE | DESCRIPTION | CRANKSHAFT THREAD | |
| COX | .010 | ALL MODELS | 2-56 | O.S. | .61 - .91 | 2-CYCLE | 5/16 - 24 | |
| COX | .020 | ALL MODELS | 3-48 | O.S. | 1.08 - 2.1 | 1.08FSR, BGX-1, 3500 | 3/8 - 24 | |
| COX | .049 - .51 | ALL MODELS | 5-40 | O.S. | .20 - .61 | 4-CYCLE | 1/4 - 28 | |
| COX | .09 | ALL MODELS | 6-32 | O.S. | .70 - 1.60 | 4-CYCLE | 5/16 - 24 | |
| ENYA | .09 - .11 | 2-CYCLE | 5MM X .8 | O.S. | 2.40 | FF-240 | 5/16 - 24 | |
| ENYA | .15 | 2-CYCLE | 6MM X 1.0 | O.S. | 2.40 - 3.20 | FT-240, FT-300, FR5-300 | 3/8 - 24 | |
| ENYA | .19 - .21 | 2-CYCLE | 1/4 - 28 | PICCO | .21 - .45 | ALL MODELS | 1/4 - 28 | |
| ENYA | .29 - .60 | 2-CYCLE | 7MM X 1.0 | PICCO | .60 | ALL MODELS | 8MM X 1.25 | |
| ENYA | .25 - .45 | 2-CYCLE SPORT | 1/4 - 28 | QUADRA | 2.0 | Q-35 | 5/16 X 24 | |
| ENYA | .46 - .80 | 4-CYCLE | 7MM X 1.0 | ROSSI | .21 | ALL MODELS | 1/4 - 28 | |
| ENYA | .90 | 4-CYCLE | 7MM X 1.0 | ROSSI | .40 - 1.05 | ALL MODELS | 8MM X 1.25 | |
| ENYA | 1.20 | 4-CYCLE | 8MM X 1.0 | ROYAL | .21 - .46 | ALL MODELS | 1/4 - 28 | |
| FOX | .15 | ALL MODELS | 10-32 | SAITO | .40 - .60 | 4-CYCLE | 6MM X 1.00 | |
| FOX | .19 - .50 | ALL MODELS | 1/4 - 28 | SAITO | .45 - .91 | 4-CYCLE | 7MM X 1.00 | |
| FOX | .60 - .78 | ALL MODELS | 5/16 X 24 | SAITO | .65 - .90 | 4-CYCLE | 7MM X 1.00 | |
| HB | .12 - .15 | ALL MODELS | 5MM X .8 | SAITO | 1.20 - 2.70 | 4-CYCLE | 8MM X 1.25 | |
| HB | .20 - .61 | ALL MODELS | 1/4 - 28 | SAITO | 1.20 - 3.00 | 4-CYCLE | 8MM X 1.25 | |
| HP | .21 - .61 | ALL MODELS | 1/4 - 28 | SUPER TIGRE | .11 - .15 | ALL MODELS | 5MM X .8 | |
| IRVINE | .20 .61 | ALL MODELS | 1/4 - 28 | SUPER TIGRE | .19 - .56 | ALL MODELS | 1/4 - 28 | |
| K&B | .15 | ALL MODELS | 10 - 32 | SUPER TIGRE | .60 | G & ST SERIES | 1/4 - 28 | |
| K&B | .19 - .65 | ALL MODELS | 1/4 - 28 | SUPER TIGRE | .61 - .90 | ALL OTHER MODELS | 5/16 - 24 | |
| MAGNUM | .21 - .61 | ALL MODELS | 1/4 - 28 | SUPER TIGRE | 1.20 - 1.80 | S-2000, S-2500, S-3000 | 10MM X 1.25 | |
| MERCO | .35 - .60 | ALL MODELS | 1/4 - 28 | YS | .45 - .60 | ALL MODELS | 8MM X 1.25 | |
| O.S. | .10 | ALL MODELS | 5MM X .8 | WEBRA | .20 - .61 | ALL MODELS | 1/4 -28 | |
| O.S. | .15 | ALL MODELS | 10 - 32 | WEBRA | .80 - .90 | ALL MODELS | 8MM X 1.25 | |
| O.S. | .20 - .50 | 2-CYCLE | 1/4 - 28 |