Compare the specs of the Brunswick Quantum Bias Pearl and Brunswick Fearless 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 Bias Pearl | Fearless |
| Cover Name | ECA-XR Pearl | Relentless |
| Cover Type | Reactive Pearl | Reactive Solid |
| Box Finish | 500 SiaAir / Crown Factory Compound | 500 SiaAir / Crown Factory Compound |
| Color | Ultramarine | Neon Green / Violet |
| Core Name | Quantum Mushroom High RG Asymmetric | Contra |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.563 | 2.474 |
| Total Diff. | 0.052 | 0.047 |
| Int. Diff. | 0.013 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |