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.


Performance Upper Mid
Part Number 60-106266-93X
Color Black / Grey Solid
Core Proof
Coverstock Prime Response
Cover Type Solid Reactive
Finish 500, 2000 Siaair Micro Pad
Weights 16-12 Pounds
Lane Condition Medium to heavy oil
Reaction Strong midlane and continuation
Warranty Two years from purchase date
Release Date March 19, 2020


Core Numbers

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


DynamiCore Technology

The Proof Pearl uses DynamiCore – the industry leading innovation in outer core technology developed by Brunswick Bowling Products. This leap in bowling ball technology is a more durable outer material that yields less compression upon impact increasing hitting power and creating an undeniable difference in sound and pin carry.

Click HERE to learn more about DynamiCore Technology.


Info Sheet
Ball Talker
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Proof Bowling Ball
Proof Core for 16 to 14 pound bowling balls
Proof Core for 13 to 12 pound bowling balls

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