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Description
Roto Grip RockStar Bowling BallRoto Grip RockStar Bowling Ball Color: Crimson Jet Maroon Coverstock: NanoStar Solid Reactive Weight Block: Rocker + A. I. Core Technology Factory Finish: 2000 grit Abralon Flare Potential: High Radius of Gyration (RG): 16lbs 2. 48; 15lbs 2. 48; 14lbs 2. 50 Differential (Diff): 16lbs 0. 054; 15lbs 0. 050; 14lbs 0. 046 Intermediate Differential (Diff): N A Fragrance: N A Behind the Design: We both know that at some point in your life you ripped on an
Roto Grip RockStar Bowling Ball
- Color: Crimson/Jet/Maroon
- Coverstock: NanoStar Solid Reactive
- Weight Block: Rocker + A.I. Core Technology
- Factory Finish: 2000-grit Abralon
- Flare Potential: High
- Radius of Gyration (RG): 16lbs - 2.48; 15lbs - 2.48; 14lbs - 2.50
- Differential (Diff): 16lbs - 0.054; 15lbs - 0.050; 14lbs - 0.046
- Intermediate Differential (Diff): N/A
- Fragrance: N/A
Behind the Design:
We both know that at some point in your life you ripped on an air guitar or shredded on the air drums to the roar of of a sold out crowd in your own head. So we decided to help you release that inner ROCKSTAR of yours by creating an instrument everyone can use to make noise on the lanes.
In order to kick things up a notch in the HP3 line we requested a new combination of core and cover, and well, lets just say the R&D Band did not disappoint. The new Rocker™ Core brings an alternative motion throughout the lane. While the new NanoStar™ coverstock provides aggressive yet classic traction throughout the lane on those Medium to Heavy conditions.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.8 ★★★★★
Based on 10 reviews
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Product Reviews
★★★★★ 5
Great Resource
Format: Paperback
Great resource that adds to your learning. Give rationals
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 5, 2025
★★★★★ 1
DO NOT PURCHASE THIS BOOK.
Format: Paperback, Format: Paperback
If I could give zero stars, I would. Do not purchase if you intend to use the Access Code. I was very careful to scratch off the Access code, but you can see it was still unreadable. I went to the website and submitted a ticket. One option for a reason to submit a ticket is 'unreadable access code", so they know this is a problem. They ask for a photo of the code and a receipt of purchase. I sent both. Then they asked for proof that the book was purchased NEW. This was not noted on the Amazon invoice. I was instructed to reach out to the vendor for the additional info. Or I could spend more money on another access code. There are other study options available.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 20, 2026
★★★★★ 5
Great study book
Format: Paperback
Questions are very similar to my current program questions and have great rationales.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2025
★★★★★ 3
Some errors
Format: Paperback
Not too good as I think. Some error between hard copy and online q&a bank. Very careful if you want to study with this
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 21, 2025
★★★★★ 1
Poor quality, the book is already falling apart.
Format: Paperback
This is a review on quality of the book NOT the content.
I just got the book today and the binding on the cover came off immediately. It’s very poorly made!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
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