Park Tool LRT-1 Lockring Tool — Bosch® Gen 2 on its side showing the bottom of the tool, click to enlarge
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Item # LRT-1

/ Tools / Crank & Bottom Bracket / E-Bike

Lockring Tool — Bosch® Gen 2

Precisely machined for a perfect fit, this 8-notch tool removes and installs the lockring that retains front chainrings found on Bosch® Gen 2 e-bike motors after the crank arm is removed.

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LRT-1 Features

  • Fits Bosch® Active Line (chainrings less than 20 teeth), Performance Line and Performance Line CX models
  • For lockrings with 50mm outside diameter and 8 notches
  • Replacement for Bosch® 0275009003 tool
  • Torque wrench compatible 3/8" square drive
  • Constructed of 4140 heat treated steel and plated for long life

Parts & Accessories


36mm Crow Foot

LRT-1 Lockring Tool - Bosch® Gen 2