Park Tool - LRT4 Lockring Tool
Park Tool
Price: $40.00

Removes and installs Shimano direct mount chainring lockrings found on XTR 9120, XT 8120, MT900, and other Shimano direct mount systems

For lockrings with 41 mm outside diameter with 16 notches

36mm hex drive to be used with Park Tool TWB-36 Crow Foot and a torque wrench to properly measure torque