This steel main drive shaft is built for the Tractor Truck (1838ls) RC platform, supplied as 1 pcs and identified as GPM TRU130S. At 130mm length and made from steel, it serves as an aftermarket replacement for compatible chassis when the original shaft is worn or damaged.
In service the shaft restores gear alignment and rotational stability inside the transmission area. Fitment relies on your chassis mounting points and coupling geometry, so verify the 130mm dimension and interface match your TAMIYA drivetrain before attempting installation.
Installation tips: check splines and mating surfaces for wear, ensure the shaft seats fully in the gearbox or coupling, and confirm there is no unwanted axial play after assembly. Use this steel shaft where added stiffness and long term durability are required for maintenance or setup work on the model.
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