Park Tool’s LRT-1 Lockring is an 8-notch tool that removes and installs the lockring that retains front chainrings found on Bosch® Gen 2 e-bike motors after the crank arm is removed.
Details:
- Suitable for Bosch® Active Line (chainrings with less than 20 teeth), Performance Line and Performance Line CX models
- For lockrings with 50 mm outside diameter and 8 notches
- Replacement for Bosch® 0275009003 tool
- Torque wrench compatible 3/8″ square drive
- Made from 4140 heat treated steel and plated for long life














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