Roto Grip Gem Bowling Ball
$199.95
Pay in 4 interest-free payments of $49.99 with 
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Available For Customers in Lower 48 States Only
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Available For Customers in Lower 48 States Only
Sometimes evolution can spark new life into technology from yesteryear. Such is the case with our latest introduction to the HP4 Line of balls.
Description
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
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.
watch the roto grip gem video bowling ball review
Roto Grip Defiant LRG Core Specs
| Weight | Radius of Gyration | Differential | Intermediate Differential (MB) |
|---|---|---|---|
| 12lbs | 2.59 | 0.029 | 0.008 |
| 13lbs | 2.57 | 0.032 | 0.010 |
| 14lbs | 2.50 | 0.052 | 0.015 |
| 15lbs | 2.47 | 0.053 | 0.016 |
| 16lbs | 2.47 | 0.051 | 0.016 |
Additional information
| Weight | 15 lbs |
|---|---|
| Dimensions | 9 × 9 × 9 in |
| Brand | |
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| Bowling Ball Coverstock Type | |
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| Radius of Gyration: RG (15LB) | |
| Differential: Diff (15LB) | |
| Mass Bias Strength | |
| Flare Potential | |
| Surface Finish | |
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Everyday Free Shipping
Place your order before 2PM EST and your order will ship out same day.
In stock items will ship out the following weekday if purchased after 2PM EST.
Ground Shipping is ALWAYS free in the USA (except Alaska, Hawaii, Puerto Rico, Guam, and APO / FPO addresses), no matter how many items you order, no matter the weight, no matter the distance. We use USPS Priority Mail and Parcel Post, UPS and FedEx as our methods of shipping. Items will take 1-5 business days to arrive depending on your location. (2-10 days in AK, HI, PR, GU, APO, FPO)
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