Details

Storm is proud to showcase several of the most dynamic asymmetrical core designs on the market such as the Catalyst Core, the same core used throughout the Crux™ series, one of the most trusted series among competitive players worldwide.GI-20 is named for Game Improvement – 2020 and was developed to help maximize performance in today’s complex bowling environment. Expand your arsenal and your mind; the possibilities are endless with Storm!
Color: White/Copper/Graphite
Fragrance: Cinnamon
GI-20 Pearl Coverstock
GI-20 shines in frictionless environments. Its reaction is emphasized in the transition areas between ball motion phases – skid, hook, and roll. Simply put, it never misses the spot. And it can recover from just about anywhere. Try it. We dare you.
Catalyst Core

In the heart of the ball lies the innovative Catalyst Core. The genius the design is in the cavity which lets the driller remove less mass with most layouts. No more second guesses or shots in the dark. The ease of drilling is self-evident in this design.
16 pounds
15 pounds
14 pounds
13 pounds
12 pounds
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Similar Balls
Ball | Brand | Comparison Grade | Coverstock | Core | RG | Diff | MB Diff | US/Overseas Release | Discontinued | |
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Omega Crux | ![]() |
GI-20 PearlPearl Reactive | CatalystAsymmetric | 2.500 | 0.052 | 0.017 | |||
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Redemption Pearl | ![]() |
A- | Aggression NE PearlPearl Reactive | RedemptionAsymmetric | 2.498 | 0.053 | 0.015 | ||
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Zing! Pearl | ![]() |
A- | Forged 2 PearlPearl Reactive | Zing!Asymmetric | 2.499 | 0.051 | 0.020 | ||
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Altered Reality | ![]() |
A- | S84 Response PearlPearl Reactive | DisturbanceAsymmetric | 2.490 | 0.052 | 0.018 | ||
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Tenacity Grit | ![]() |
A- | URGPearl Reactive | Tenacity Low RGAsymmetric | 2.503 | 0.052 | 0.018 | ||
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Katana Legend | ![]() |
A- | Forged + PearlPearl Reactive | KatanaAsymmetric | 2.503 | 0.050 | 0.020 | ||
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Authority | ![]() |
A- | ERT 2.0 PearlPearl Reactive | AuthorityAsymmetric | 2.503 | 0.050 | 0.020 | ||
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Tenacity | ![]() |
A- | UR (Ultra Responsive)Pearl Reactive | Tenacity Low RGAsymmetric | 2.503 | 0.052 | 0.018 | ||
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Eternity | ![]() |
A- | S84 Response PearlPearl Reactive | EpochAsymmetric | 2.490 | 0.050 | 0.014 | ||
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Katana | ![]() |
A- | ForgedPearl Reactive | KatanaAsymmetric | 2.503 | 0.050 | 0.020 | ||
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Zenith Pearl | ![]() |
A- | A.X.H. PearlPearl Reactive | ZenithAsymmetric | 2.485 | 0.052 | 0.019 | ||
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Savage Life | ![]() |
A- | Exciter PearlPearl Reactive | SavageAsymmetric | 2.490 | 0.051 | 0.016 | ||
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Volatility Torque | ![]() |
A- | S84 Response PearlPearl Reactive | Volatility AsymmetricAsymmetric | 2.490 | 0.050 | 0.014 | ||
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Thug Life | ![]() |
A- | Composite PearlPearl Reactive | ThugAsymmetric | 2.505 | 0.052 | 0.015 | ||
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Dynamite | ![]() |
A- | USY 1 PearlPearl Reactive | Turbine Version 2Symmetric | 2.496 | 0.052 | |||
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Dynamite Max | ![]() |
A- | Reverie 3 (RVR 3) PearlPearl Reactive | Turbine Version 2Symmetric | 2.496 | 0.052 | |||
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Gauntlet Fury | ![]() |
A- | Semtex Pearl CFIPearl Reactive | GauntletAsymmetric | 2.500 | 0.050 | 0.012 | ||
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Precision | ![]() |
A- | Prime PearlPearl Reactive | Precision SD (Single Density)Asymmetric | 2.490 | 0.054 | 0.020 | ||
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Envision Pearl | ![]() |
A- | HK22 - GSV-X PearlPearl Reactive | EnvisionAsymmetric | 2.501 | 0.053 | 0.010 | ||
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Crux Pearl | ![]() |
A- | ERG PearlPearl Reactive | CatalystAsymmetric | 2.500 | 0.052 | 0.017 | ||
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Conspiracy Theory | ![]() |
A- | TP-1 (Textured Pearl 1)Pearl Reactive | Conspiracy TheoryAsymmetric | 2.490 | 0.054 | 0.023 | ||
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Infinite Physix | ![]() |
A- | ReXPearl Reactive | AtomicAsymmetric | 2.480 | 0.053 | 0.017 | ||
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Incognito Pearl | ![]() |
A- | S. H. A. R. P. PearlPearl Reactive | IncognitoAsymmetric | 2.487 | 0.053 | 0.017 | ||
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Intimidator Pearl | ![]() |
A- | Inciter Max PearlPearl Reactive | AssailantAsymmetric | 2.481 | 0.051 | 0.016 | ||
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Dark Code | ![]() |
A- | ReXPearl Reactive | RAD4Asymmetric | 2.500 | 0.058 | 0.020 |