15lb RST X-4 S Pearl

Roto Grip RST X-4 Pearl

The RST X-4 Pearl continues Roto Grip’s commitment to delivering Tour-level performance for today’s high-rev players. Professionals need a ball that creates continuous downlane motion with minimal deflection as it enters the pocket—especially when their rev rates naturally amplify ball motion. This ball was designed specifically to meet that demand.

Engineers focused on developing a core that retains its dynamics after drilling, ensuring the ball maintains strong torque and consistent reaction throughout its path. By placing a larger mass at the base of the core, the RST design ensures that when drilled—particularly the thumbhole placement—core integrity remains intact. This preserves the ball’s ability to read the midlane effectively and continue with confidence downlane.

Wrapped in a responsive pearl coverstock, the RST X-4 Pearl offers easy length through the front with a sharp, continuous motion at the breakpoint—ideal for medium to higher-volume conditions where bowlers need controlled length and explosive backend motion.

Performance Highlights:

• Tour-Level core engineered to maintain dynamic integrity after drilling

• Larger core mass at the base improves torque retention and continuation

• Designed for high-rev players seeking strong, continuous downlane shape

• Pearl cover provides clean length with a decisive, angular backend

• Minimizes pocket deflection for improved hitting power and carry