Mugen MTX-4 16T 1st Gear by 3Racing MTX4-0816  [MTX4-0816]

Hardened 1st Gear for MTX-4

This is an RC-scale hardened aluminum first gear designed for the Mugen MTX-4 chassis. The 16-tooth profile replaces the stock first gear to restore or extend drivetrain service life while keeping gear engagement consistent under load. The part is intended purely for model car use on the MTX-4 platform.

Installation is a gearbox-level service item: remove the gearbox cover, replace the first gear with the new 16T unit, inspect surrounding bearings and spur/pinion alignment, then verify proper gear mesh and free rotation before reassembly. Routine checks after initial runs help confirm mesh stability and wear patterns.

For tuning use, this gear contributes to repeatable engagement behavior that matters when adjusting gear mesh, preload, or when diagnosing drivetrain noise. It is a component-level hop-up for racers and builders who maintain MTX-4 kits and want a durable, metal first gear option.