This Tamiya 3451579 spare replaces the motor mounting point on TRF421X touring chassis, giving a direct-fit option for maintenance and setup. The part acts as a hop-up style accessory to secure the motor and retain correct drivetrain alignment.
Its main advantages are repeatable motor positioning and simplified replacement during motor swaps or upgrades. Because it influences motor alignment relative to the spur and pinion, always check gear mesh and clearances after installation to maintain smooth operation.
Installation is typically a straightforward swap into the TRF421X motor location; verify chassis fit and re-check motor spacing prior to reassembling other components. The product is supplied as the mount only unless additional hardware is listed by the seller.
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