The Park Tool LRT-1 is a professional-grade lockring tool designed for the removal and installation of chainring lockrings on Bosch e-bike systems. It is specifically compatible with Bosch Active Line (chainrings under 20 teeth), Performance Line, and Performance Line CX models.

Precision Engineering: Designed to fit lockrings with an 8-notch configuration and a 50mm outside diameter, this tool serves as a high-quality replacement for the Bosch 0275009003 tool. It provides a secure, non-slip interface to ensure accurate torque application during motor and drivetrain maintenance.