For drivers upgrading a Tamiya TB-04 or TB-04 PRO chassis, the Tamiya 54540 steel bevel gear set delivers a robust replacement for fragile stock gears. Steel bevels tolerate higher torque and repeated use better than standard plastic parts.
Prior to fitting the Tamiya 54540 gears, clean the differential internals and remove any debris. Apply a suitable metal-compatible grease, ensure correct mesh settings, and recheck after a few short runs to confirm everything is seating correctly.
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