Roto Grip Gem Crystal Overseas Bowling Ball
SKU: ROT-GEM-CRYS
Categories: Bowling Ball Archives, Overseas Bowling Ball Archives, Roto Grip Bowling Ball Archives, Roto Grip Overseas Bowling Ball Archives
Tag: Bowling Balls
Int “Gem Crystal,” the latest addition to our highly anticipated gem series. This newly released product shares striking similarities with the original “Gem,” while proudly showcasing enhanced features. Elevate your experience to the pinnacle of elegance and performance.
Description
Roto Grip Gem Crystal Overseas Bowling Ball
Introducing “Gem Crystal” from our highly anticipated gem series. This newly released product shares similarities with the original “Gem” but boasts enhanced features. Experience the next level of elegance and performance.
Exquisite. Remarkable. Sublime. While these words may capture its essence, we prefer a more fitting label for this masterpiece – the GEM™. Prepare to leave your competitors spellbound, as its stunning aesthetics are matched only by its outstanding performance. This is all thanks to the inner treasure that lies within, the Defiant™ LRG Core – Roto Grip’s most groundbreaking creation with an extraordinarily low RG asymmetrical core. This translates to an unparalleled speed and revolution response, making it our most dynamic asymmetrical core to date.
DEFIANT LRG CORE
Through, thorough studies on flare migration and core tendencies, our focus returned to the Defiant Series of bowling balls. These balls showcased a core that was ahead of its time in terms of flare migration, resulting in a consistent and prolonged motion. After conducting extensive reviews and tests, we discovered that by tweaking the composition of this core shape, we were able to develop an asymmetrical core with unprecedented properties: the DEFIANT™ LRG CORE. This core boasts exceptional speed, unmatched revving capabilities, and formidable continuation, making it the pinnacle of our bowling ball offerings.
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 |
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| Radius of Gyration: RG (15LB) | |
| Differential: Diff (15LB) | |
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Everyday Free Shipping

Place your order before 2PM EST Monday - Friday (excluding holidays) and your order will ship out same day for in stock and available products. In stock items will ship out the following weekday if purchased after 2PM EST.
In stock Items may take 3-5 business days to arrive depending on your location. (2-10 days in AK, HI, PR, GU, APO, FPO).
We use USPS Priority Mail, Parcel Post, UPS and FedEx as our methods of shipping. 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!
International Shipping - Duties, & Taxes & Return Information
Duties & Taxes - If shipping international, duties and taxes will need to be paid locally. BowlersMart.com is not responsible for any local duties or tax fees.Returns - We gladly ship worldwide, but please note that international customers are responsible for all return shipping and handling costs. If you wish to return your order, you must cover all shipping fees, duties, and any additional charges incurred. We recommend using a trackable shipping method to ensure your return reaches us safely. For more details, please review our full return policy or contact our customer support team.
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WARNING:
This product can expose you to chemicals including Lead, Phthalates, and/or other chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.





