A Pro CG bowling ball from SPI Bowling Products (Storm, Roto Grip, and 900 Global) is where the CG (Center of Gravity) ends up extremely far left or right of the Pin (Core Top) and the PSA (Preferred Spin Axis or Mass Bias) marking.
This is a premium, first-quality ball crafted to the same exacting standards as the rest of these elite lines - ensuring top-tier performance and durability without any compromises.
Due to changes in the USBC rules for static balances and weight holes, Pro Pins/Pro Cg's no longer have specialized and unique layouts. These balls can be drilled using any of the SPI drilling layouts. NOTE - On Pro CG balls, the final placement of the CG (Center of Gravity) will appear to be in an odd location but this will not affect the ball reaction.
The EquinoX Solid brings back the powerful Solarion A.I. Core, now paired with Storm’s latest advancement in cover technology—A2S. This next-gen Adhesion System Coverstock takes oil absorption to new heights, delivering aggressive traction in the midlane and a fast, high-energy move on the backend. What truly makes A2S special is its ability to create sharp angular motion, something rarely seen in solid covers, giving the EquinoX Solid a distinctive and dynamic reaction. The tri-cylindrical Solarion Core powers a strong, confident breakpoint motion while maintaining the predictability elite players rely on. For those seeking maximum hook, the EquinoX Solid rivals the Ion Max in strength, but with a noticeably different shape downlane. It’s fierce, reactive, and engineered to dominate.
Here's what Storm has to say about the Equinox Solid:
The EquinoX Solid marks the return of the unmatched Solarion A.I. Core, now paired with the next evolution of Storm's Adhesion System Technology - A2S. This advanced coverstock pushed the limits of oil absorption in the Storm lineup, delivering fierce midlane traction and explosive backend response. What sets A2S apart is its ability to generate sharp, angular motion, a rare trait for a textured solid, making the EquinoX Solid uniquely dynamic. At the heart of it all, the revolutionary tri-cylindrical Solarion Core delivers a strong, decisive motion at the breakpoint without sacrificing the consistency players demand. If you're chasing total hook, the EquinoX Solid will stand toe-to-toe with the Ion Max, but with a dramatically different shape and motion. It's bold, aggressive, and built to stand out.
