Compare the specs of the Storm Pitch Purple and Storm Gravity Evolve 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 | Pitch Purple | Gravity Evolve |
| Cover Name | Rev-Controll Solid Urethane | SPEC Solid Reactive |
| Cover Type | Urethane Solid | Reactive Solid |
| Box Finish | 1000 Abralon | 2000 Abralon |
| Color | Purple Solid | Gunmetal / Fire / Crimson |
| Core Name | Capacitor | Shape-Lock HD |
| Core Type | Symmetrical | Asymmetrical |
| RG | 2.57 | 2.48 |
| Total Diff. | 0.022 | 0.052 |
| Int. Diff. | 0.000 | 0.020 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |