The Park Tool BBT-18 is a heavy-duty, investment-cast tool designed for professional and serious home mechanics.
Its eight-notch fitting removes and installs cartridge bottom brackets on most modern bikes, plus chainring lockrings on select e-bike drivetrains. Built to last, this precision tool delivers the leverage and durability needed for reliable component work.
Features
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:
- 8 notches with a nominal outside diameter of 43.4 mm
- The hole in the centre of the casting is 22.5 mm, and will not fit over 30 mm spindles—see Park Tool BBT-118
- Features 36 mm wrench flats
Contents
- 1 x Park Tool BBT-18 Bottom Bracket and Lockring Tool
