Tackle Bosch® Gen 2 e-bike maintenance with confidence using this precision-engineered chainring lockring tool. Built from premium carbon steel with a 1/2" drive fitting, it’s the perfect fit for professional or home mechanics working on Active Line, Performance Line, and CX models.
 
Designed for the installation and removal of chainring lockrings on Bosch® Gen 2 e-bike motors.
Precision-engineered with CNC machined premium flex plus carbon steel for superior durability and performance.
Integrated 1/2" drive fitting ensures compatibility with our ratchet, fixed handle, and torque wrenches for convenient use.
Compatible with Bosch Active Line, Performance Line, and Performance Line CX from model year 2014 onwards, with a 50 mm lockring outer diameter.
This tool serves as a reliable replacement for the Bosch® 0275009003 tool.