Roto Grip · HP3 line · Discontinued
The Roto Grip Rockstar is a symmetrical solid bowling ball from Roto Grip's HP3 line, released in February 2025. It has the NanoStar Solid coverstock and the Rocker AI weight block, finished at 2000 Grit out of the box. At 15 lb its RG is 2.48, with a differential of 0.05. It's been discontinued.
Among the 65 balls here with a 15 lb version, its RG is low, so it revs up early, and its differential is medium. Its reaction ratings suit it to medium to heavy oil and short to long patterns in fresh to transition conditions, with a mid-lane to late hook, a smooth turn at the breakpoint and high flare.
Specs
Details
- Coverstock
- NanoStar Solid
- Weight block
- Rocker AI
- Core
- AI
- Symmetry
- Symmetrical
- Factory finish
- 2000 Grit
- Durometer
- 73-75
- Flare potential
- Medium-High
- Color
- Crimson/Jet/Maroon
- Release date
- 02/01/25
Reaction
- Flare Potential8
- Ball Shape3-4
- Hook Length6-8
- Oil Volume6-9
- Pattern Length4-8
- Lane Condition2-5
Tech specs
| Weight | RG | Diff | PSA |
|---|---|---|---|
| 12 lb | 2.64 | 0.037 | — |
| 13 lb | 2.58 | 0.047 | — |
| 14 lb | 2.5 | 0.046 | — |
| 15 lb | 2.48 | 0.05 | — |
| 16 lb | 2.48 | 0.054 | — |
Balls most like it
Available balls closest to the Roto Grip Rockstar on the six reaction ratings; 100% is an identical reaction.
Storm Monsoon Solid90%
900 Global Vengeance Returns Hybrid89%
Roto Grip Hyped Up! Hybrid88%
Storm Bionic Hybrid87%
Storm Ion Max Pearl Pearl84%
Storm Phaze II Solid84%
Storm !Q Tour Edition Solid83%
Storm Equinox Solid Solid83%
Related balls
Other versions of the Roto Grip Rockstar, then the rest of Roto Grip's HP3 line.
