- ECA-XR Solid
- Factory finish
- 500/1000 Siaair
- Core (15 lb)
- Quantum Mushroom
- R.G. / Differential / Bias
16 lb 2.522 0.052 0.013 15 lb 2.563 0.052 0.013 14 lb 2.642 0.044 0.010
- From the manufacturer
Quantum Bias is the first asymmetric ball in the Quantum line. Our ECA-XR coverstock combined with the Quantum Mushroom High RG Asymmetric core gives strong hooking motion with excellent pin carry on oily lane conditions.
- Read more at brunswickbowling.com
- Release date
- August 7, 2018
- Retired. This ball is no longer produced by the manufacturer, but it may still be available at pro shops and online retailers in limited weights.
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