Compare the specs of the Brunswick Quantum Bias 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 | Fearless |
| Cover Name | ECA-XR | Relentless |
| Cover Type | Reactive Solid | Reactive Solid |
| Box Finish | 500 / 1000 SiaAir | 500 SiaAir / Crown Factory Compound |
| Color | White Solid | 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. | |