If you want a reliable upgrade for the Tamiya TA-04, the Tamiya 49230 0.6M Aluminum Pinion Gear is built to last. Machined from hard-coated aluminum, this 27-tooth 0.6M pinion attaches directly to your motor and is aimed at improving gear engagement and consistency under load.
Fitting the Tamiya 49230 pinion is straightforward; secure it to the motor shaft with the supplied grub screws and set the mesh so teeth engage without tight spots. After initial runs, recheck the grub screws and gear alignment to prevent premature wear.
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