Park Tool's LRT-4 Lockring Tool Shimano® Direct Mount on it's side, click to enlarge
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Item # LRT-4

/ Tools / Crank & Bottom Bracket

Lockring Tool — Shimano® Direct Mount

Precisely machined for a perfect fit, the LRT-4 removes and installs lockrings found on many Shimano® direct-mount chainring systems. Features a 36 mm hex fitting for use with the Park Tool TWB-36 Crow Foot and a torque wrench (each available separately) to achieve proper torque. Precisely CNC-machined from 6061 aluminum for a perfect fit and to prevent marring expensive parts, with a machined flat face for optimal lockring engagement.

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LRT-4 Features

Fits lockrings with 41 mm outside diameter and 16 notches including:

  • Shimano® XTR® 9120
  • Shimano® XT® 8120
  • Shimano® MT900
  • Other Shimano® direct mount systems

Parts & Accessories


36mm Crow Foot

LRT-4 Lockring Tool - Shimano® Direct Mount