Park Tool

Steel Bottom Bracket And Lockring Tool BBT-169

Park Tool Steel Bottom Bracket And Lockring Tool BBT-169 is a shop-grade 16-notch bottom bracket and lockring tool built for consistent, damage-free removal and installation of select bicycle components that use a 44–45mm, 16-notch interface.

• Precision-machined 4140 steel - high strength and crisp engagement for repeated service work without rounding tool interfaces
• 16-notch compatibility (44–45mm major / 42.7mm minor) - designed to match 16-notch fittings where accurate sizing matters for safe torque application
• Extra-deep body - clears extra-wide spindles for easier access during bottom bracket and lockring service
• Low-profile engagement walls - improves fit on recessed lockrings where bulkier tools can struggle to seat fully
• Three drive options - use a 3/8" drive, 1" hex, or 36mm wrench flats to match the torque tool already on the bench