Compare the specs of the Roto Grip X-Cell and Roto Grip Optimum Idol 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 | X-Cell | Optimum Idol |
| Cover Name | eTrax ULTRA Solid Reactive | MicroTrax Solid Reactive |
| Cover Type | Reactive Solid | Reactive Solid |
| Box Finish | 2000 Abralon | 2000 Abralon |
| Color | Turquoise / Navy / Black | Heliotrope Purple |
| Core Name | Nucleus + AI | Ikon + AI |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.50 | 2.47 |
| Total Diff. | 0.056 | 0.056 |
| Int. Diff. | 0.019 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |