The Kyosho MZW206-1 spur gear is a direct-fit replacement for Mini-Z ball differential setups including the MR-03. It is built to mesh cleanly and deliver consistent power transfer for club runs and casual track sessions.
This spur gear fits common Mini-Z platforms such as the MR-015, MR-02 and MR-03, making it suitable for routine servicing or modest performance tuning. Its geometry is chosen to integrate with ball differential assemblies used by many Mini-Z racers.
Installation is straightforward: clean mating parts, mount the gear with correct mesh, and confirm smooth rotation. Inspect teeth periodically for wear and adjust lubrication or mesh as needed to extend service life.
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