Park Tool BBT-118 Steel Bottom Bracket / Lockring Tool - 8-Notch

Park Tool BBT-118 Steel Bottom Bracket / Lockring Tool - 8-NotchConstructed from precision machined 4140 steel, the BBT 118 is a heavy duty tool for the removal and installation of select bicycle components with an eight notch tool fitting. The BBT 118 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 118 has three methods of tool

Constructed from precision-machined 4140 steel, the BBT-118 is a heavy duty tool for the removal and installation of select bicycle components with an eight-notch tool fitting. The BBT-118 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-118 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 components. For added stability, the BBT-118 features integrated threads for use with the Park Tool BBT-RS Bottom Bracket Tool Retaining System or GPS-1 Guide Pins (each sold separately).

Installs and removes the following components with eight-notch tool fittings:

• Shimano® Octalink® drive-side bottom bracket cups with external notches
  
• ISIS Drive bottom bracket cups including Truvativ® and Bontrager®
  
• Front chainring lockring for Bosch® Gen 3, Gen 4, and Gen 5 e-bike systems
  
• Front chainring lockring for Specialized® Levo Brose e-bike systems

Tool specifications:

• 3/8" drive fitting
  
• 1" and 36 mm wrench flats
  
• 8 notches with a nominal inside diameter of 37.6 mm and outside diameter of 42.7 mm
  
• Internal clearance: 31.14 mm (1.226") depth (from tool face) x 22.48 mm (0.885") diameter
  
• Not rated for use with impact drivers