| S.no | Company Name | Founded | Country |
|---|---|---|---|
| 1 | Superior Gearbox Company | USA | |
| 2 | Dana Limited | USA | |
| 3 | Bosch Rexroth Corp. | USA | |
| 4 | Poclain Hydraulics Inc. | USA | |
| 5 | Carlisle Brake & Friction | USA | |
| 6 | Lisle Corp. | USA | |
| 7 | Tremec | USA | |
| 8 | ASI Technologies Inc. | USA | |
| 9 | Indiana Tool & Manufacturing Co. | USA | |
| 10 | Turner Uni-Drive | USA | |
| 11 | ODG Gear | USA | |
| 12 | Allison Transmission Holdings Inc | USA | |
| 13 | Xtrac | USA | |
| 14 | Joseph Industries Inc. | USA | |
| 15 | Tuff Torq | USA | |
| 16 | Dartco Transmission Sales & Service Inc. | USA | |
| 17 | Bowers Transmission | USA | |
| 18 | Daikin Clutch U.S.A. Inc. | USA | |
| 19 | Uniflex Technologies | USA | |
| 20 | Clark-Hurth Components | USA |
