Yokomo YOKSD644TS Main Drive Shaft for MR-4TCSD  [YOKSD644TS]

Yokomo SD-644TS - MR-4TCSD MAIN DRIVE SHAFT W/ONE WAY
Price:
NZD$100.54
Brand:
Yokomo
Model:
YOKSD644TS
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Drift-oriented One-Way Main Shaft for MR-4TCSD

This replacement main drive shaft is specified for MR-4TCSD and features an integrated one-way unit designed to change torque transfer characteristics used in drift setups.

It is intended as a drop-in alternative where MR-4TCSD compatibility is required. The part carries motor torque into the transmission while allowing freer rotation under slip in one direction, which can alter rear traction and slide behavior during drifting.

Fitment advice: inspect spline engagement and bearing condition before installing, verify the one-way assembly orientation, and ensure the spur gear and gearbox clearances are correct. Use suitable threadlocker on threaded joints and recheck wheel alignment once assembled. Basic workshop experience is assumed.

Specifications

  • Item: Main drive shaft with one-way.
  • Material: Not specified.
  • Model Number: YOKSD644TS.
  • Compatibility: MR-4TCSD.

Choose this shaft when replacing worn MR-4TCSD drive components or when experimenting with one-way setups in drift package drivetrains; perform routine gearbox inspections after installation.
Remark :
Due to limited stock availability, please notice that some Yokomo items may have to order from the factory and the ready time is around 4-6 weeks. Customer purchases the item is assumed to accept the waiting time which allows us to order directly from the manufacturer if the item is out of our warehouse.

Can I use this shaft to tune rear-end slip for drifting?

Yes. The integrated one-way changes how power is transferred under wheel slip, letting you refine how the rear wheels disengage from the drivetrain during slides.

Does the one-way affect acceleration feel?

It can. Under certain driving loads the one-way may let the driven axle rotate more freely, which can change throttle response during quick transitions in drift driving.

What should I check on arrival?

Verify spline fit, inspect for burrs or damage, and confirm the one-way operates as expected before installing into your MR-4TCSD chassis.

Are there any gear clearance concerns?

Yes. After fitting, rotate the drivetrain to confirm the shaft clears the spur gear and gearbox housing throughout the range of motion and under load.

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