PARK TOOL Chainring Lock Ring Tool

This direct mount chainring lockring tool listing includes multiple fitments for e-bike motor systems, direct mount chainrings, and modular crank lockrings. Each variant is designed to remove and install specific front chainring lockrings, helping mechanics service Bosch, Shimano STEPS, Shimano direct mount, Fazua Ride 60, Specialized, Cannondale, and FSA systems.

Available variants cover common lockring sizes including 50mm 8-notch, 54mm 16-notch, 47–48mm 4 or 8-notch, and 41mm 16-notch designs. Select versions feature 3/8 inch square drive compatibility for ratchets or torque wrenches, while others use a 36mm hex drive for use with a crow foot and torque wrench. Steel versions are made from heat-treated 4140 steel with plating for long life, while the Shimano direct mount version uses CNC-machined 6061 aluminum with a flat face for secure lockring engagement.

Choose the variant that matches your motor system, crank type, lockring diameter, and notch count.