Compare the specs of the Brunswick Quantum Classic Black and Brunswick Fanatic BTU Pearl 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 | Brunswick | Brunswick |
| Ball Name | Quantum Classic Black | Fanatic BTU Pearl |
| Cover Name | Relativity Flip Solid | BTU Pearl |
| Cover Type | Reactive Solid | Reactive Pearl |
| Box Finish | 500 SiaAir / Crown Factory Compound | 500 / 4000 SiaAir |
| Color | Classic Black | Silver |
| Core Name | Quantum Mushroom High RG | Low Differential I-Block Symmetric |
| Core Type | Symmetrical | Symmetrical |
| RG | 2.557 | 2.601 |
| Total Diff. | 0.053 | 0.030 |
| Int. Diff. | 0.000 | 0.000 |
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