Overview

The JoPo Grips Twist Inner Sleeve – With Pre-Installed Slug is the removable component of the JoPo Grips Twist interchangeable thumb system, featuring a factory-installed thumb slug for faster and easier setup.

The JoPo Grips Twist system uses a secure twist-lock design, allowing Inner Sleeves to lock into the JoPo Grips Twist Outer Sleeve, which is permanently installed in the ball. This allows bowlers to maintain a consistent thumb feel across multiple bowling balls.

Unlike blank Inner Sleeves, this version includes a pre-installed slug that is already aligned and flush, eliminating the need for gluing. The slug must still be drilled and shaped to match the bowler’s hand for a proper fit.

Available in multiple sizes and colors, these Inner Sleeves provide a convenient, ready-to-drill solution for pro shops and bowlers looking to save time while maintaining a consistent feel.

Features

• Pre-Installed Slug – Eliminates the need to glue a slug into the Inner Sleeve
• Interchangeable Thumb System – Easily swap thumb inserts between bowling balls
• Consistent Fit and Feel – Maintain the same thumb feel across your entire arsenal
• Secure Twist-Lock Design – Requires a full rotation to lock and unlock, preventing accidental loosening
• Load-Distributing Design – Threaded structure helps absorb force during release for a smooth, consistent feel
• Ready to Drill – Slug is pre-installed, aligned, and ready for custom fitting
• Durable Construction – Built for repeated use and long-lasting performance

Product Specs

Which JoPo Grips Twist Option is Right for You?