This steel rear gearbox joint is intended for the Tamiya M1025 Hummer rear assembly and carries the model code HM1041SR. It is supplied as 1 pcs and designed as an aftermarket replacement to fit the rear gearbox arrangement used on TA-01 and TA-02 based vehicles.
The component replaces the factory plastic joint with a metal option to increase rear drivetrain rigidity for users targeting longevity or a firmer drivetrain response. It locates into the existing gearbox housing and should be fitted using the original chassis mounting points where applicable.
Check alignment, gear mesh and surrounding bearings during installation, rotate the drivetrain by hand to confirm smooth movement, and follow standard RC workshop procedures for torque and testing before running the model outdoors.
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