Roto Grip Perfect Gem Bowling Ball
Roto Grip
$199.95
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Roto Grip
Roto Grip Perfect Gem Bowling Ball
The legend has evolved. We took the undisputed heavy-hitter of the GEM™ series and pushed it through our advanced A.I. Core Technology lab to create a ball that doesn’t just hook—it strikes with surgical intent. By strategically refining the core density, we’ve unlocked a new motion profile that retains the raw strength of the original while offering a cleaner look through the front of the lane and a more aggressive finish at the pins.
Coverstock Type Solid Reactive
Cover Name Roto Grip E-R1 Solid Reactive
Core Shape Asymmetrical Core
Core Name Roto Grip GEM A.I. Core
Radius of Gyration: RG (15LB) 2.49
Differential: Diff (15LB) .057
Mass Bias Strength .017
Flare Potential 4 – 5 Inches
Surface Finish 2000 Grit
Preferred Lane Conditions Heavy Oil, Medium – Heavy Oil
Weight 12LB-16LB
Color Black, Pink
Performance Level High Performance Bowling Balls, Roto Grip HP4 Bowling Balls
