- Prime Response Solid
- Factory finish
- 500/2000 Siaair
- Black / Gray
- Core (15 lb)
- R.G. / Differential / Bias
16 lb 2.506 0.052 0.020 15 lb 2.519 0.052 0.020 14 lb 2.538 0.052 0.020 13 lb 2.589 0.043 0.011 12 lb 2.612 0.043 0.011
- From the manufacturer
The Proof is a new upper mid performance release with possibly the strongest core numbers ever in this category and an updated Prime cover that will get Track Bowling fans excited. The Proof is very strong and continuous and surprised our testers because it is usable for a long time and does not seem to want to quit, despite the strong core, cover, and finish combination.
- Read more at www.trackbowling.com
- Release date
- March 19, 2020
- 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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