Park Tool BBT-179 Steel Bottom Bracket Tool

Park Tool BBT-179 Steel Bottom Bracket ToolConstructed from precision machined 4140 steel, the BBT 179 is a heavy duty tool for the removal and installation of select threaded bottom brackets with 12 notch tool fittings, including SRAM BSA DUB, Race Face Cinch, Rotor BSA30, and others. The BBT 179 is designed to be compatible with any bottom bracket with the corresponding tool fitting, with an extra deep body to accommodate extra wide spindles and low profile walls at the point of engagement

Constructed from precision-machined 4140 steel, the BBT-179 is a heavy duty tool for the removal and installation of select threaded bottom brackets with 12-notch tool fittings, including SRAM® BSA DUB®, Race Face® Cinch®, Rotor® BSA30, and others. The BBT-179 is designed to be compatible with any bottom bracket with the corresponding tool fitting, with an extra-deep body to accommodate extra-wide spindles and low-profile walls at the point of engagement for recessed lockrings. The BBT-179 has three methods of tool engagement—a 3/8" drive fitting, a 1" hex fitting, and 36 mm wrench flats—allowing you to take on even the most seized bottom bracket cups. For added stability, the BBT-179 features integrated threads for use with the Park Tool BBT-RS Bottom Bracket Tool Retaining System or GPS-1 Guide Pins (each sold separately).

Fits 12-notch threaded bottom bracket tool fittings with a major diameter (outside of notches) of 45–47 mm and a minor diameter (inside of notches) of 44 mm, including:

• SRAM® BSA DUB®
  
• Race Face® Cinch®
  
• Rotor® BSA30
  
• Zipp® Vuma™
  
• Hawk Racing™ BB3086™
  
• and more

Tool specifications:

• 3/8" drive fitting
  
• 1" and 36 mm wrench flats
  
• 50.04 mm (1.97") outer diameter at point of engagement
  
• Internal clearance: 42 mm (1.654") depth (from tool face) x 30.44 mm (1.198") diameter
  
• Not rated for use with impact drivers