Roto Grip · HP5 line
The Roto Grip Transformer is an asymmetrical solid bowling ball from Roto Grip's HP5 line, released in January 2026. It has the VR1 Solid coverstock and the Morph Wing weight block, finished at 4000 Grit out of the box. At 15 lb its RG is 2.51, with a differential of 0.051 and a PSA of 0.015.
Among the 65 balls here with a 15 lb version, its RG is medium, and its differential is high, for more flare. Its reaction ratings suit it to medium to heavy oil and medium to long patterns in fresh to transition conditions, with a mid-lane hook, a moderate to angular turn at the breakpoint and high flare.
Specs
Details
- Coverstock
- VR1 Solid
- Weight block
- Morph Wing
- Core
- Light Weight
- Symmetry
- Asymmetrical
- Factory finish
- 4000 Grit
- Durometer
- 73-75
- Flare potential
- High
- Color
- Indigo/Violet/Slate
- Release date
- 01/23/26
Reaction
- Flare Potential10
- Ball Shape7-8
- Hook Length6-7
- Oil Volume6-9
- Pattern Length6-9
- Lane Condition2-5
Tech specs
| Weight | RG | Diff | PSA |
|---|---|---|---|
| 12 lb | 2.59 | 0.029 | 0.008 |
| 13 lb | 2.57 | 0.032 | 0.01 |
| 14 lb | 2.53 | 0.053 | 0.013 |
| 15 lb | 2.51 | 0.051 | 0.015 |
| 16 lb | 2.5 | 0.05 | 0.015 |
Balls most like it
Available balls closest to the Roto Grip Transformer on the six reaction ratings; 100% is an identical reaction.
Storm Equinox Solid Solid95%
Storm Bionic Hybrid92%
Storm Ion Max Pearl Pearl91%
Storm Equinox Hybrid Hybrid88%
Storm Monsoon Solid85%
Storm Phaze II Pearl Pearl84%
900 Global Vengeance Returns Hybrid84%
Roto Grip RST Hyperdrive Pearl Pearl84%
Related balls
The rest of Roto Grip's HP5 line.
