Compare the specs of the Roto Grip Optimum Idol and Roto Grip Tour Dynam-X side by side in the ball comparison table below. To view the full bowling ball review for one of these balls, click the ball name link in the table below.
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| Brand | Roto Grip | Roto Grip |
| Ball Name | Optimum Idol | Tour Dynam-X |
| Cover Name | MicroTrax Solid Reactive | Tour Trax Solid Reactive |
| Cover Type | Reactive Solid | Reactive Solid |
| Box Finish | 2000 Abralon | 2000 Abralon |
| Color | Heliotrope Purple | Dark Cyan / Onyx |
| Core Name | Ikon + AI Core Technology | Rondure Tour |
| Core Type | Symmetrical | Asymmetrical |
| RG | 2.47 | 2.47 |
| Total Diff. | 0.056 | 0.026 |
| Int. Diff. | 0.000 | 0.010 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |