Rule the lanes and your competition with the Brunswick Kingpin Rule

This performance core is wrapped in Roto Grip's Tour-ethane Pearl Reactive coverstock which was formulated to offer max performance as well as control when facing high friction patterns and surfaces

Coverstock: Polyester/Plastic

The cover and core paired with a 2000 Grit LSS finish create a bowling ball that is controllable when the lanes are drier and cause more friction making it a great match for speed-dominant bowlers

The unique microfiber material gently lifts away contaminants

Track Synthesis Bowling Ball heel Rule the lanes and yourTrack Synthesis Bowling Ball The Synthesis is a powerful new direction for Pro Performance that Track has introduced. Synthesis is based on the release of I Core Gen4, which is a new version of the classic I Core series. It has a higher intermediate differential for a sharper breakpoint for a big ball. QR 12 Solid additives in the HK22C base help the new I Core Gen4 move in a way that Track fans have been wanting. It fits perfectly between Theorem