Park Tool

GPS-24 24 mm Guide Pin for Bottom Bracket Tools

Park Tool GPS-24 24 mm Guide Pin for Bottom Bracket Tools improves tool alignment and stability when removing and installing bottom brackets on 24 mm spindle systems. By centering compatible threaded Park Tool bottom bracket tools in the BB shell, it helps reduce misalignment that can lead to slipped engagement and damaged splines—especially on tight, factory-installed cups.

• 24 mm spindle sizing - Designed to engage properly with 24 mm spindle bottom brackets for accurate centering during BB service
• 61 mm usable pin length - Reaches into the bottom bracket to help prevent the tool from tilting or walking under load
• Threaded compatibility - Works with Park Tool bottom bracket tools that feature integrated threads (compatible across 13 Park Tool BB tools with this interface)
• Integrated 5 mm hex - Allows quick, tool-free hand installation and removal using a standard 5 mm hex key if needed
• Stability under torque - Helps keep the bottom bracket tool seated consistently throughout removal and installation