Tamiya M1025 Hummer Front Gear Joint HM1041SF Steel Upgrade by GPM  [HM1041SF]

This steel front gearbox joint is supplied as a single unit designed to replace the OEM front joint used on the Tamiya M1025 Hummer scale platform. It is intended to improve service life where the stock plastic component tends to fail.

Compatibility and role: the part serves as an aftermarket replacement for the M1025 Hummer front gearbox joint and transfers drive through the front gearbox to the wheels. It is designed for model use only, not suitable for road vehicles.

Fitting advice: you will need to open the front gearbox to extract the old joint and press or fit the steel piece in its place. Use standard hand tools, pay attention to gear alignment and check bearing condition to maintain smooth running.

Performance considerations: swapping in a steel joint reduces deformation under load and yields more repeatable drivetrain response, useful for setup work. Expect different wear characteristics compared with plastic and verify rotating clearances after refit.