925538 Big Twin pinion gear lock tool

When it is time to service the bottom end of an Evolution or Shovelhead, this MCS pinion gear lock tool is indispensable. It is designed to securely lock the pinion gear in place, allowing you to safely remove or install the pinion gear nut without the engine rotating. This tool is specifically for 1954–1999 Big Twin models, excluding Twin Cams. By providing a solid mechanical lock, it allows for the high torque levels required for these components without risking damage to the internal engine parts. Referencing OEM 925538, this is a heavy-duty shop tool that ensures your engine work is performed to professional standards.