StrikeStackBall library
Track Theorem Delta bowling ball

Track

Theorem Delta

Released August 2026

Medium OilMid HookAngular
Hook strength
7/10
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Specs

Coverstock
HK22 - Super Response Hybrid Hybrid Reactive
Core
MC2 Asymmetric
RG
2.473
Differential
0.046
Intermediate diff (mass bias)
0.017
Factory finish
500/1000/1500 Siaair, Crown Factory Compound
Released
August 2026

The oil, hook and strength labels are StrikeStack's estimate from the published specs, not the manufacturer's rating. Specs provided by bowwwl.com.

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