Yokomo YOKSD303R rear input shaft for MR-4TCSD RC drift chassis  [YOKSD303R]

Rear input shaft for MR-4TCSD

This is an RC-scale rear input shaft intended for use with the MR-4TCSD chassis, supplied under the Yokomo model code YOKSD303R. The text focuses on compatibility, installation context, and how the part affects drivetrain tuning for drift setups.

Compatibility is limited to the MR-4TCSD platform as indicated by the product name, so confirm fit with your chassis before ordering. The shaft is a dedicated drivetrain component that replaces the factory unit and interfaces with the gearbox and differential area of the MR-4TCSD layout.

Installation notes: work in a clean workspace, remove the drivetrain cover and any retaining hardware to access the input area, swap the old shaft for the new unit, and reassemble using the original screws and retaining parts. Check rotational freedom and endplay after installation and before running the model.

Tuning role: the input shaft is a mechanical link within the drivetrain; changing it can affect drivetrain smoothness, component alignment, and how power is transferred to the rear end during drift maneuvers. After replacement, verify gear mesh, bearing alignment, and any lateral play to maintain consistent handling on track.