StrikeStackBall library
Columbia 300 Street Rally bowling ball

Columbia 300

Street Rally

Released December 2025

Medium OilMid HookAngular
Hook strength
6/10
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Specs

Coverstock
HK22C2 - Formula 1 Pearl Pearl Reactive
Core
Shifter Asymmetric
RG
2.478
Differential
0.050
Intermediate diff (mass bias)
0.015
Factory finish
500/1000/1500 Siaair, Crown Factory Compound
Released
December 2025

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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