Park Tool

GPS-29 29 mm Guide Pin for Bottom Bracket Tools

Park Tool GPS-29 29 mm Guide Pin improves stability and alignment during bottom bracket removal and installation by centering compatible Park Tool bottom bracket tools on BBs with a 28.99 mm spindle. By keeping the tool supported through the spindle interface, it helps reduce the chance of misalignment and slipping while turning a stubborn bottom bracket.

• 61 mm usable pin length - Engages into the bottom bracket to keep the BB tool aligned during removal and installation
• 28.99 mm spindle sizing - Purpose-fit for bottom brackets with a 28.99 mm spindle for consistent centering
• Threaded compatibility - Works with any of the thirteen Park Tool bottom bracket tools that feature integrated threads
• Integrated 5 mm hex fitting - Makes installation and removal fast and controlled, even with greasy hands
• Stability under load - Helps keep the bottom bracket tool seated squarely when higher torque is required