TAMIYA M1025 Hummer 43mm Steel Front/Rear CVD Shaft by GPM HM1243C  [HM1243C]

Steel front/rear CVD shaft

This aftermarket steel front and rear CVD shaft is produced for the TAMIYA M1025 Hummer platform and supplied as 1pr for RC-scale driveline use. The item is a direct-type driveshaft intended to replace common plastic originals where users seek a metal option for longer service life under typical RC operation.

The component is described in the source name as 43mm and steel, and is intended to transfer rotational force between gearbox output and wheel hubs in the front or rear positions on the M1025 chassis. In assembly check the mating fit at the drive cups and the condition of associated hexes and bearings before final installation. Ensure smooth rotation and correct alignment to avoid premature wear.

For tuning and maintenance the part serves as a straightforward durability upgrade: inspect for wear periodically, keep spline interfaces lightly lubricated with appropriate RC greases, and replace if straightness or spline engagement degrades. The shaft affects drivetrain feel and reliability rather than vehicle performance metrics.