Park Tool

GPS-12 12mm Guide Pin for Bottom Bracket Tools

The Park Tool GPS-12 12mm Guide Pin is a simple, high-leverage add-on that improves stability and alignment when removing or installing bottom brackets with compatible Park Tool bottom bracket tools. By centering the tool more securely in the hub area, it helps reduce tilt, cam-out, and thread-starting mistakes—especially useful when higher torque is required or access is tight.

• Alignment and stability upgrade - Helps keep the lockring/bottom bracket tool centered to reduce misalignment during removal and installation
• 61 mm usable pin length - Engages deep into the hub area for a steadier setup and better control under torque
• Integrated 5 mm hex fitting - Allows tool-free hand installation and removal using a 5 mm hex key
• Sized for 15 mm thru axle hubs - Proper fitment for hubs using a 15 mm thru axle standard
• Disc brake lockring support - Stabilizes the lockring tool during disc brake lockring removal and installation for cleaner engagement
• Compatible tool fit - Threads directly into Park Tool BBT-69.4 or BBT-169 lockring tools for a secure connection