The GPM HM1243C steel CVD shafts are manufactured to reinforce the driveline of the Tamiya M1025 Hummer. These 43mm shafts are suitable for front and rear use and are produced to tight tolerances to lower torsional flex and extend service life under sustained loads. Fitment improves drivetrain rigidity and reduces component wear, making these parts a technical upgrade for serious hobbyists and builders focused on performance and reliability.