MR-4TCSD Rear Input Shaft - Precision Fit YOKSD303R by Yokomo  [YOKSD303R]

MR-4TCSD rear input shaft overview

This RC rear input shaft is made for the MR-4TCSD chassis and is listed under the Yokomo model YOKSD303R. The description covers compatibility, fit guidance, and the part's effects on drivetrain tuning for drift setups.

Fitment is specific to the MR-4TCSD platform as shown in the product title, so double-check chassis compatibility before ordering. The shaft replaces the factory drivetrain unit and interfaces with the gearbox and rear differential layout on MR-4TCSD cars.

Installation notes: work on a clean bench, remove the drivetrain cover and any retaining hardware to access the input shaft area, swap the original shaft for the YOKSD303R, and reassemble using the original screws and retainers. After assembly, check rotational freedom and endplay prior to running the model.

Tuning role: the input shaft is a key drivetrain link; replacing it can alter drivetrain smoothness, alignment, and how power reaches the rear during drift maneuvers. Once fitted, verify gear mesh, bearing alignment, and lateral play to keep handling consistent on track.