Roto Grip Gremlin Bowling Ball
$249.95 Original price was: $249.95.$174.95Current price is: $174.95.
SKU: BBMRGX
Categories: MRP/MAP, Symmetrical Core Bowling Balls, Top Selling Bowling Items, Roto Grip, Roto Grip Bowling Balls, Bowling Balls, High Performance Bowling Balls, Pre-Orders / New Releases
Tags: .050 Diff, 2.48 RG, Bowling Balls, HP3, Reactive
Brand: Roto Grip
What should I know about the Gremlin?
Maxed-out asymmetric Rondure core for length and a strong, continuous backend
Nano-free V-R1 Pearl Reactive cover, polished at Power Edge
Built for medium to medium-heavy oil with length and recovery
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Description
A Maxed-Out Pearl Built for Length and a Continuous Backend
About the Gremlin
The Roto Grip Gremlin is the pearl that started the Gremlin Series. It pairs a maxed-out version of Roto Grip’s asymmetric Rondure core with the nano-free V-R1 Pearl Reactive coverstock to deliver clean length through the front of the lane and a strong, continuous response off the dry. It is built for bowlers who want a pearl that reads later and keeps driving rather than jumping.
Roto Grip’s R&D lab pushed the Rondure core to its limits for the Gremlin, raising both the RG and the differential to the highest values that shape has ever carried. The result is the longest, most continuous motion in the family: a pearl that lets you move deeper on the lane and still comes around the corner, complementing your stronger asymmetric solids when the heads start to open. Finished at Power Edge polish in a Plum, Raisin, and Tanzanite cosmetic, it handles medium to medium-heavy oil with length and forgiveness.
Understanding the Roto Grip Rondure MaxD Core and Roto Grip V-R1 Pearl Reactive
Roto Grip built the Gremlin around length and continuation. Specifically, the maxed-out Rondure MaxD core carries the highest RG and differential the shape has ever had, so the ball revs up later and stores energy deep into the pattern for a strong, continuous finish. The nano-free V-R1 Pearl Reactive cover, polished at Power Edge, pushes easily through the front of the lane, then responds to friction down-lane without getting out of control. The full per-weight specifications are listed below.
A Maxed-Out Asymmetric Core for the Longest, Most Continuous Motion in the Gremlin Family
At the heart of the Gremlin is the asymmetric Rondure MaxD core, a maxed-out version of Roto Grip’s proven Rondure shape. At 15 lb it measures RG 2.50, a strong .058 differential, and a .010 intermediate differential (mass bias). Roto Grip’s R&D lab changed the densities of both the block and the bottom slug to push the RG and the differential to the highest values this core has ever carried, which is what gives the Gremlin its length and its big, continuous backend.
That maxed-out shape is the whole story. A higher RG means the ball revs up later and saves its energy for the back of the lane, while the strong differential delivers the flare to clear the oil. Together they produce a pearl that pushes long through the fronts and then makes a strong, continuous move: more room for error than a sharp, jumpy reaction, and exactly the shape you want when you need length with recovery.
A Nano-Free Pearl That Pushes Easily and Responds Without Getting Out of Control
The Gremlin wraps that core in the V-R1 Pearl Reactive coverstock, finished at Power Edge polish. The V-R1 (Versatile Response) shell is a nano-free formulation built to handle a wide range of oil conditions and types, from the fresh to the transition to the burn. It pushes easily through the front of the lane, then responds consistently to friction down-lane without overreacting, which is what makes the Gremlin so playable as the lanes change.
Paired with the maxed-out Rondure core, the V-R1 Pearl gives the Gremlin a clean length-and-continuation shape. It is the pearl that complements your stronger asymmetric solids: when the heads open up and you want to move deeper, the Gremlin lets you get to the friction and still comes around the corner. Leave it polished for the most length, or take the surface down at your pro shop for an earlier read when the oil increases.
Gremlin Specs
| Weight | Radius of Gyration (RG) | Differential | Mass Bias |
|---|---|---|---|
| 16 lbs | 2.50 | .056 | .008 |
| 15 lbs | 2.50 | .058 | .010 |
| 14 lbs | 2.54 | .058 | .008 |
| 13 lbs | 2.57 | .032 | .010 |
| 12 lbs | 2.59 | .029 | .011 |
RG and differential vary by weight. Specifications provided by the manufacturer.
Who This Ball Is Right For
✓Tournament Players: A clean, continuous pearl that lets you move deeper as the lanes transition and still recovers off the dry
✓Higher-Rev Bowlers: The maxed-out Rondure core stores energy for revs, delivering length with a strong, continuous backend instead of a sharp flip
✓Arsenal Builders: The pearl that complements your strong asymmetric solids, the step-down ball once the heads start to open
✓Length Seekers: Polished V-R1 Pearl pushes easily through the fronts for bowlers who need the ball to get down the lane
Good to Know Before You Buy
·Strong, aggressive motion: This is a high-flare piece built for traction. If you want a controlled, lower-hook reaction, a lower-differential ball will suit you better.
·Ships polished: The Power Edge (Polished) finish runs clean and long out of the box. For an earlier read on heavier oil, take the surface down at your pro shop.
·Asymmetric layout sensitivity: Layout choices shift the reaction more than on a symmetric ball. Match the pin and mass bias to your game with your pro shop.
·Sold undrilled: Ships without finger holes, so it can be fitted to your hand and span.
BowlersMart Tips: Where the Gremlin Fits in Your Roto Grip Arsenal
Where It Fits in Your Arsenal
In the Roto Grip lineup, the Gremlin is your length-and-continuation pearl. Where strong solids attack the freshest, heaviest oil, the Gremlin steps in once the heads open slightly: it pushes through the front of the lane, lets you move deeper, and still comes around the corner with a continuous, forgiving motion. It pairs naturally above your strongest solids and below cleaner, weaker pearls, the ball you reach for when you need length without giving up backend.
Surface Adjustments
The Power Edge polish is a length-and-continuation setup out of the box. Take the surface down with a lower-grit pad for an earlier, stronger read when the oil increases, or re-polish to restore length. Have surface changes done at your pro shop for an even, consistent finish.
Coverstock Care
Wipe the V-R1 Pearl cover with an approved reactive ball cleaner after every session, and deep clean it periodically. Keeping the cover fresh preserves the easy length and continuous friction response that make the Gremlin so playable.
Earn points on every Roto Grip purchase through the Striking Rewards loyalty program. Every ball you add to your arsenal builds toward your next reward.
Shop With Confidence at BowlersMart
The Roto Grip Gremlin Bowling Ball ships free with no minimum purchase and is backed by our 60-day return policy. As an authorized Roto Grip dealer, every ball is genuine and covered by the full one-year Roto Grip warranty. Place your order before 2 PM EST and it ships the same day.
Additional information
| Weight | 15 lbs |
|---|---|
| Dimensions | 9 × 9 × 9 in |
| Brand | |
| Bowling Ball Core Shape | |
| Bowling Ball Core Name | |
| Bowling Ball Cover Name | |
| Bowling Ball Coverstock Type | |
| Radius of Gyration: RG (15LB) | |
| Differential: Diff (15LB) | |
| Mass Bias Strength | |
| Flare Potential | |
| Surface Finish | |
| Ball Performance Level | |
| Preferred Lane Conditions | |
| Bowling Ball Color | |
| Ball Weight | |
| Scent | |
| Release Date |
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Q&A
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.






