Roto Grip Gem – The Solid Monster in Your Arsenal
Meet the Roto Grip Gem — a beast of a bowling ball engineered for bowlers who demand maximum control and carry on heavy oil lane conditions. The Gem combines Roto Grip’s lowest RG asymmetrical core ever (Defiant LRG) with a high-traction MicroTrax™ Solid Reactive cover, giving you both torque and consistency downlane. BowlingShopEurope+3Roto Grip+3BowlerX.com+3
🔍 Key Features & Specs
| Feature | Description |
|---|---|
| Core | Defiant LRG Asymmetric — the lowest RG asymmetrical core Roto Grip has produced, enabling faster revving motion. Roto Grip |
| Coverstock | MicroTrax Solid Reactive — designed to balance midlane traction and strong backend continuation. Roto Grip+2BowlerX.com+2 |
| Factory Finish | 2000‑grit Abralon / 2000 grit sanded finish BowlingShopEurope+1 |
| RG / Diff (15 lb) | ~ 2.47 RG / ~ 0.053 differential BowlerX.com+2BowlingShopEurope+2 |
| Mass Bias Diff | ~ 0.016 (15 lb) 123bowl.com+1 |
| Recommended Conditions | Medium to heavy oil patterns BowlingShopEurope+2BowlerX.com+2 |
| Motion Profile | Strong midlane read, aggressive downlane continuation, high flare potential Inside Bowling+3BowlerX.com+3BowlingShopEurope+3 |
🎯 How & When to Use the Gem
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Heavy oil companion: The Gem thrives on fresh or heavy oil surfaces where lesser balls might struggle to maintain traction.
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As your “go deep / carry ball”: Use it when you need a ball that can read deep and still drive through carrydown.
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Drilling considerations: Because of its asymmetrical core and strong cover, layout is critical. Pin-up layouts will yield stronger angular motion; more conservative layouts can tame it for control.
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Surface tuning: Depending on lane conditions, you may want to polish it for more length or add surface (sanding) to help it read earlier.
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Compare & complement: Use the Gem alongside more controllable solids or pearls to give yourself coverage across varying lane conditions.
