Roto Grip X-Cell Bowling Ball

A.I. Core Forgiveness Meets eTrax ULTRA Traction

About the X-Cell

The Roto Grip X-Cell unlocks greater levels of performance and forgiveness, thanks to A.I. Core Technology and the eTrax ULTRA coverstock. Some might call it forgiveness overload. Roto Grip just calls it the beginning of changing the game again. It pairs the asymmetric Nucleus A.I. Core with the strong eTrax ULTRA Solid Reactive cover for big, forgiving hook on heavier oil.

The X-Cell wraps that asymmetric Nucleus core in the eTrax ULTRA Solid cover at a 2000-grit finish, in a bold Black and Blue cosmetic. The strong asymmetric core supplies heavy flare and continuation, while the eTrax ULTRA solid grabs the oil early, giving a wide margin for error on medium-heavy to heavy conditions. It is a high-performance HP4 piece built around forgiveness.

Understanding the Roto Grip Nucleus A.I. Core and Roto Grip eTrax ULTRA Solid Reactive

Roto Grip built the X-Cell around forgiveness and traction. Specifically, the asymmetric Nucleus A.I. Core reads the mid-lane strongly and keeps driving with heavy flare, while the eTrax ULTRA Solid cover at a 2000-grit finish grabs the lane early for strong traction. As a result, it delivers big, forgiving hook with a wide margin for error on heavier oil, the kind of reaction that helps every style find the pocket.

An Asymmetric A.I. Core Built for Power and Forgiveness

At the heart of the X-Cell is the asymmetric Nucleus A.I. Core. At 15 lb it measures RG 2.50, a strong .056 differential, and a .019 intermediate differential (mass bias), numbers that produce heavy flare and a powerful, defined asymmetric motion. The high differential creates the track flare to clear oil, while the asymmetric Nucleus shape drives strongly and continuously through the mid-lane.

Roto Grip designed the Nucleus block with A.I. Core Technology for a wide, forgiving reaction, game-changing performance for bowlers of every style and ability. The strong, continuous motion gives a large margin for error, so the ball helps you find the pocket even when your shot is not perfect. Because it is asymmetric, layout has a strong influence on the reaction, so your pro shop can tune the pin and mass bias to your game.

A Strong Solid Cover for Early, Forgiving Traction

The X-Cell wraps that core in the eTrax ULTRA Solid Reactive coverstock, finished at 2000 grit. The solid cover at a sanded grit grabs the front and mid-lane early, delivering the strong traction needed to handle medium-heavy to heavy oil. Combined with the forgiving Nucleus core, it reads the lane early and drives continuously, giving you a wide, dependable margin for error.

That early, strong traction is what makes the X-Cell such a confidence ball on heavier patterns. The eTrax ULTRA solid digs through oil that would push a weaker cover down the lane, then the strong core turns that traction into big, continuous hook. Leave it at the 2000-grit box surface for maximum traction, or polish it up at your pro shop for a cleaner read when the volume drops.

BowlersMart Tips: Where the X-Cell Fits in Your Roto Grip Arsenal

Shop With Confidence at BowlersMart

The Roto Grip X-Cell 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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