The Rockstar rolls into Roto Grip’s HP3 line as the Optimum Idol makes its exit from their list of current products. This ball uses the new symmetrical Rocker core design, which is surrounded by the Amplified Inertia (AI) outer core. The RG from this new core shape is slightly higher (2.48″) than the Ikon + AI design (2.47″). The differential is lowered from 0.056″ on the Optimum Idol to 0.050″ on the Rockstar. The coverstock is also different, as the Rockstar features the new NanoStar Solid Reactive formula. It comes out of the box at a 2000 Abralon finish, which is the same finish as the MicroTrax Solid cover that was on the Optimum Idol. With all these changes, we saw more length from the Rockstar and a much smoother motion when it found friction. We had more success the straighter we could stay with the Rockstar, and our two testers who prefer to play straighter liked this ball more than the one who covers more boards.

Stroker had the best reaction out of our three bowlers on the fresh medium oil pattern. He was able to play his A-game on the fresh, going directly up the lane on the eight board, letting the Rockstar turn over at the breakpoint and make a strong sweeping motion through the back end. His pin carry was much better than the other two bowlers, seeing much more energy at the pins from going up the lane to the breakpoint instead of having to hook back to it. He had no trouble staying ahead of the transition, especially since playing the lanes like this set them up very nicely for later in...

To read the full review, please visit:
https://www.bowlingthismonth.com/bowling-ball-review/roto-grip-rockstar/

Strengths:

Weaknesses:

Overall Summary: