Compare the specs of the Brunswick Kingpin Rule 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 | Kingpin Rule | Fearless |
| Cover Name | ECA-XR | Relentless |
| Cover Type | Reactive Solid | Reactive Solid |
| Box Finish | 500 / 2000 SiaAir | 500 SiaAir / Crown Factory Compound |
| Color | Maroon / Orange / White | Neon Green / Violet |
| Core Name | Kingpin Ultra Low RG | Contra |
| Core Type | Asymmetrical | Symmetrical |
| RG | 2.483 | 2.474 |
| Total Diff. | 0.055 | 0.047 |
| Int. Diff. | 0.020 | 0.000 |
Torque Length Back End Total Hook Ball Tester Ratings | Already a premium member? Click here to log in. | |