Compare the specs of the 900 Global Altered Reality and 900 Global Zen U 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 | 900 Global | 900 Global |
| Ball Name | Altered Reality | Zen U |
| Cover Name | S84 Response Pearl | S35 Urethane+ Solid |
| Cover Type | Reactive Pearl | Urethane Solid |
| Box Finish | 1500 Grit Polished | 1000 Abralon |
| Color | Salmon / Black / Silver | Jet Black |
| Core Name | Disturbance Asymmetric | Meditate LD Symmetric |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.49 | 2.56 |
| Total Diff. | 0.052 | 0.027 |
| Int. Diff. | 0.018 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |