Roto Grip Gem Bowling Ball Video Review – 2 Testers (RH & LH), 2 Lane Patterns (Sport & House)

This is our review of the Roto Grip Gem bowling ball!

roto grip gem bowling ball

Brilliant. Extraordinary. Magnificent. Call it what you will, but we prefer to call this beauty exactly what it is, a GEM™. Not only will its breathtakingly good looks mesmerize your competition, but its overall performance will as well thanks to the inner treasure known as the Defiant™ LRG Core – (the lowest RG asymmetrical core Roto Grip has ever created.) Which means this is by far the fastest revving asymmetrical core we have ever produced.

And well, we couldn’t just stop there, so we wrapped this monstrosity of a core with the most aggressive solid coverstock we make known as MicroTrax™ Solid Reactive. Making this ball dazzle on those Heavier Oil Conditions.

DEFIANT LRG CORE
Sometimes evolution can spark new life into technology from yesteryear. Such is the case with our latest introduction to the HP4 Line of balls. With recent more in-depth studies of flare migration and core tendencies we circled the wagons back to the Defiant Series of bowling balls which featured a core ahead of its time regarding flare migration in order to create a longer constant motion. Upon further review and testing, we found that by altering the composite of this core shape, we were able to create the fastest revving, strongest continuing, lowest RG asymmetrical core we have ever offered in the history of ever now known as the DEFIANT™ LRG CORE.

MICROTRAX™ COVERSTOCK
The MicroTrax (Micro Nanoparticle Traction) Coverstock offers the optimum balance of midlane traction and responsiveness to friction thanks the blend of nanoparticles throughout the coverstock. This formulation maintains its surface profile texture longer to ensure you get maximum performance while displacing oil at an above average rate compared to other coverstock materials on the market today.

Coverstock Name: MicroTrax Solid Reactive
Coverstock Style: Solid
Coverstock Type: Reactive
Weight Block: Defiant LRG Core
Core Type: Asymmetrical
Color: Citrine/Ruby/Amethyst
Finish 1500: 2000 Grit Abralon
Finish Method Can be Polished OR Can be Sanded More
Durometer 73-75 on D-Scale
Flare Potential High
Weights 12 – 16 lbs.

RG: 2.47
DIFF: .053
PSA: .016

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Coverstock Name MicroTrax
Coverstock Style Hybrid
Coverstock Type Reactive
Weight Block RST Core = Roto Star Tour (Asymmetrical)
Color Black / Dark Forest / Forest Pearl
Finish 3000 Abralon
Finish Method Can be Polished OR Can be Sanded More
Durometer 73-75 on D-Scale
Flare Potential High
Weights 16lbs – 12lbs

RG: 2.53
DIFF: .053
PSA:.016

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COVERSTOCK:e-Trax Hybrid Reactive
CORE: E.T. Core
COLOR: Purple Solid/Emerald/Teal
FINISH: 1500-grit Polished
CONDITION: Medium Oil – Medium/Heavy Oil
FLARE POTENTIAL: High
AVAILABLE WEIGHTS: 12 – 16 lbs.
PRODUCT SKU: RAE
RG (15lb): 2.52
Diff (15lb): .054

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Color: Salmon/Black/Silver
Coverstock: S84 Response Pearl
Weight Block: Disturbance Asymmetric
Factory Finish: 1500-grit Polished
Flare Potential: High
Radius of Gyration (RG): 16lbs – 2.48; 15lbs – 2.49; 14lbs – 2.50
Differential (Diff): 16lbs – 0.052; 15lbs – 0.052; 14lbs – 0.052
Intermediate Differential (Diff): 16lbs – 0.018; 15lbs – 0.018; 14lbs – 0.018

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Coverstock – ReX Pearl Reactive
Weight Block – RAD4™ Core
Factory Finish – 1500-grit Polished
Ball Color – Obsidian
Fragrance – Cherry Delight
RG (15lb) – 2.50
Diff (15lb) – .058

 

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