StrikeStack
Ball library
Ebonite Spartan bowling ball

Ebonite

Spartan

Released January 2026

Heavy OilEarly HookContinuous
Hook strength
10/10

Specs

Coverstock
HK22C2 - Optimize Solid
Core
Iron Fist V2 Asymmetric
RG
2.473
Differential
0.053
Intermediate diff (mass bias)
0.019
Factory finish
500/1500 Siaair Micro Pad
Released
January 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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