Roto Grip Gremlin Bowling Ball

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

RG and differential vary by weight. Specifications provided by the manufacturer.

BowlersMart Tips: Where the Gremlin Fits in Your Roto Grip Arsenal

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.

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