D-Max Gearbox F & R Input Shaft SD-303DA for Yokomo  [SD-303DA]

Overview of the input shaft

The Yokomo SD-303DA is an input shaft for the D-Max gearbox, intended to replace the front and rear drive input piece in RC cars to restore proper drivetrain operation.

In practice this shaft is the mechanical link between the gearbox and the drivetrain; swapping it can influence gear alignment and how gears mesh. It is supplied as a direct replacement for the D-Max input position and is useful during service, scheduled maintenance, or when diagnosing transmission play and odd noises.

Fitment tips: make sure the shaft is seated fully in the gearbox and then recheck mesh and axial endplay following installation. Carry out slow rotation checks before running the model at speed. For maintenance and setup, fitting a new input shaft can tighten engagement and help maintain consistent gear contact under load, which supports predictable vehicle behavior.