Compare the specs of the Hammer Viral and Hammer Spike Black/Gold 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 | Hammer | Hammer |
| Ball Name | Viral | Spike Black/Gold |
| Cover Name | Violent Flip Reactive | GTR IV Hybrid |
| Cover Type | Reactive Pearl | Reactive Hybrid |
| Box Finish | 500 / 1000 Abralon / Powerhouse Factory Finish Polish | 800 / 2000 Abralon / Powerhouse Factory Finish Polish |
| Color | Gun Smoke | Black / Gold Pearl |
| Core Name | Vibe | Widow Nasty |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.51 | 2.56 |
| Total Diff. | 0.042 | 0.054 |
| Int. Diff. | 0.000 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |