Yokomo YOKSD303R Rear Input Shaft for MR-4TCSD Chassis  [YOKSD303R]

Installation and tuning notes for MR-4TCSD shaft

This rear input shaft is supplied for use with the MR-4TCSD chassis and is identified by the Yokomo part number YOKSD303R. The content highlights fitment, basic install steps, and how the component can affect drivetrain tuning for drift cars.

Fitment should be checked against the MR-4TCSD platform as noted by the product listing; confirm your chassis before purchase. The shaft replaces the original drivetrain component and engages with the gearbox and rear differential regions of the MR-4TCSD layout.

Installation procedure: clear a bench area, remove the drivetrain cover and any retention hardware to reach the input shaft location, replace the worn shaft with the YOKSD303R, and reuse the original screws and retaining parts where appropriate. Verify rotation and endplay when reassembled.

Impact on setup: as part of the drivetrain chain, swapping the input shaft can affect alignment, smoothness of rotation, and rear power transfer under drift conditions. After fitting, inspect gear mesh and bearing alignment and correct any lateral play to maintain consistent lap times.