TAMIYA Tractor Truck Internal Brass Gears TRU1200S by GPM  [TRU1200S]

Internal brass gearbox gears for TAMIYA tractor trucks

This aftermarket gear set contains brass gears shaped for installation inside the gearbox of supported TAMIYA tractor truck models. These items are mechanical parts meant to influence drivetrain behaviour and are not electronic or motor upgrades.

Fitting the brass gears can alter gearbox response and effective speed characteristics in small, controlled ways. Proper installation requires access to the gearbox internals and close attention to gear mesh and bearing condition to ensure long term reliability.

For modellers who want a simple gearbox-level adjustment on compatible TAMIYA tractor trucks, these brass gears offer a direct swap solution; always verify mesh and bearing condition when fitting.