The Super B TB-1074 Shimano Lockring/Bottom Bracket Tool is a purpose-built bike tool for removing and installing Shimano® XTR FC-M9100 / FC-M9120 chainrings and compatible 16-notch external bearing bottom brackets, making it an essential tool for mechanics working on the latest Shimano® drivetrains. Its precision-machined design ensures a secure fit, reducing the risk of rounding out delicate lockring notches during servicing.
- Removes and installs Shimano® XTR FC-M9100 / FC-M9120 chainrings
- Fits 16-notch external bearing bottom bracket Shimano® SM-BBR60
- Use with a 36 mm open-end wrench or Super B B.B. wrenches TB-BB10 / TB-8919
- Precision-built for accurate, damage-free servicing

