Park Tool BBT-169 Bottom Bracket Tool

Made from precision-machined 4140 steel, the BBT-169 is a high-performance tool for removing and installing select components with 16-notch tool holders, including bottom brackets, Center-Lock disc brakes, and lockrings for electric bike motors. The BBT-169 is designed to be compatible with any bottom bracket featuring the corresponding tool socket. It features an extra-deep body for particularly wide axles and flat walls at the engagement point for recessed lockrings. The BBT-169 offers three tool attachment options—a 3/8" drive, a 1" hex adapter, and 36-mm wrench flats—so you can loosen even the most stubborn bottom bracket shells. For added stability, the BBT-169 features integrated threads for use with the Park Tool BBT-RS Bottom Bracket Tool Retention System or the GPS-1 guide pins (each sold separately).

Features of the Park Tool BBT-169 bottom bracket tool

Compatible with 16-notch tool holders with a major diameter (outside the notches) of 44–45 mm and a minor diameter (inside the notches) of 42.7 mm, including:

• Shimano® BB80, BB5700, XT® BB70, BB51, and earlier external threaded bottom bracket shells
• Threaded bottom bracket shells from Campagnolo®, Chris King®, FSA® MegaExo®, Hope™, SRAM®/Truvativ® GXP®, Race Face® X-type, Surly®, Wheels®, Fulcrum®, and others
• Center-Lock lockrings for disc brake rotors
• Lockrings for Bafang BBSH and BBS02 mid-drive motors

Tool specifications:

• 3/8" drive socket
• 1" and 36 mm wrench flats
• 50.04 mm (1.97") outer diameter at the engagement point
• Internal dimensions: 42 mm (1.654") depth (from tool face) x 30.44 mm (1.198") diameter
• Not suitable for use with impact wrenches