- Gremlin Tour-X

First Impressions
The Roto Grip Gremlin Tour-X arrives in March 2026 as the newest addition to Roto Grip's HP3 line and comes in the Smoke/Velvet/Ink color combination – a muted interplay of gray, violet and dark ink tones that sets it apart visually from the Plum/Raisin/Tanzanite design of its predecessor, the Roto Grip Gremlin. Inside sits the Rondure Tour-X Core, an asymmetric evolution of the proven Rondure MaxD Core. By deliberately altering the densities of the core block and the slug, both the RG value and the differential were intentionally lowered: at 15 lbs the RG is 2.48 (predecessor: 2.50), the differential 0.034 (predecessor: 0.058) and the intermediate differential 0.011 (predecessor: 0.010). This modification should produce a more centered mass distribution and create noticeably more controlled energy behavior at the breakpoint. Flare potential is rated as medium at 3–4 inches – a noticeable reduction compared to the flare of the original Gremlin, which was classified as high. The cover is the V-R1 Hybrid Reactive coverstock, a nano-free formulation with a 2:1 ratio of solid to pearl content, shipped out of the box at 4000 grit Abralon. Compared to the original Gremlin, which used the V-R1 Pearl Reactive cover with a polished Power Edge finish, the hybrid construction should give the Tour-X noticeably more traction in the midlane without giving up backend responsiveness entirely. Durometer is 73–75 Rex, and availability covers weights from 12 to 16 lbs.
Comparison
Where the Gremlin Tour-X fits within the Roto Grip lineup is largely determined by its drastically reduced differential. While the original Gremlin, with its high 0.058 differential and pearl cover, was built for maximum length and an explosive backend reaction, the Tour-X pursues a fundamentally different philosophy: less angle, and in exchange a rounder, more continuous arc. Conceptually this approach recalls what Storm and Roto Grip have done with earlier "Tour" and "Pro" variants – less differential for more control and a smoother ball motion. In the arsenal hierarchy, the Gremlin Tour-X should slot in below stronger balls such as the Storm Phase II, the Roto Grip Rockstar or the 900 Global Vengeance, but above pure control pieces like the Storm IQ Tour. That could put it in a similar niche to the one the Iron Pro occupied previously – a controlled asymmetric ball for situations where stronger equipment picks up too early. Compared to the Storm Bionic and Storm Concept, also released in spring 2026 and both built around the new A.I. Core technology, the Gremlin Tour-X deliberately relies on a more conventional core approach without an A.I. outer core. That could give it a more classic ball motion that some bowlers find easier to predict.
On the Lanes
According to the manufacturer, the Gremlin Tour-X is designed for medium to medium-heavy oil conditions and should play to its strengths where maximum hook matters less than precise control and repeatable ball motion. The combination of lower RG and reduced differential should deliver an earlier but smoother read in the midlane – without the abrupt change of direction at the breakpoint that can occur with higher-differential balls. The hybrid cover with its 4000 grit Abralon finish should help smooth out the typical "jumpy" reaction on more heavily played surfaces while still providing enough traction to read the midlane reliably. The ball should be especially well suited to competitive bowlers who need a dependable control piece on flatter lane conditions or during advanced transition. On house patterns it could serve as a versatile option that allows both straighter and more open lines. The V-R1 hybrid coverstock is considered particularly adaptable: sanding it creates more friction, polishing it gains more length – which should make the Tour-X a flexible tool in the arsenal. If you have a high rev rate and your stronger balls react too aggressively through transition, the Gremlin Tour-X could serve as a controlled alternative. If you have fewer revs, the lower RG potentially offers enough midlane read to still get the ball working reliably despite the reduced differential. Overall, the Gremlin Tour-X positions itself as a precision-oriented asymmetric ball that represents the controlled, tournament-ready variant within the Gremlin series – less surprise, more repeatability.