Compare the specs of the Storm Pro-Motion and Storm Timeless 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 | Storm | Storm |
| Ball Name | Pro-Motion | Timeless |
| Cover Name | SPEC Solid Reactive | R2S Hybrid Reactive |
| Cover Type | Reactive Solid | Reactive Hybrid |
| Box Finish | 2000 Abralon | 1500 Grit Polished |
| Color | Steel Blue | Blue / Platinum / Black |
| Core Name | Piston | Dual-Drive |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.52 | 2.57 |
| Total Diff. | 0.049 | 0.050 |
| Int. Diff. | 0.000 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |