StrikeStack
Ball library
Roto Grip RST Hyperdrive Pearl bowling ball

Roto Grip

RST Hyperdrive Pearl

Released September 2025

Medium OilLate HookAngular
Hook strength
6/10

Specs

Coverstock
U-R1 Pearl Pearl Reactive
Core
RST + A.I. Asymmetric
RG
2.520
Differential
0.055
Intermediate diff (mass bias)
0.017
Factory finish
Power Edge
Released
September 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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