MR-4TCSD One-Way Replacement Main Drive Shaft - Yokomo YOKSD644TS  [YOKSD644TS]

Yokomo SD-644TS - MR-4TCSD MAIN DRIVE SHAFT W/ONE WAY
Price:
AUD$85.87
Brand:
Yokomo
Model:
YOKSD644TS
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Spares / Hop-ups - Yokomo - DP category
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Replacement Drive Shaft for MR-4TCSD

This is a replacement main drive shaft intended for MR-4TCSD applications, featuring an integrated one-way to influence driven behaviour for drift-oriented builds.

The unit functions as a direct drivetrain substitute where MR-4TCSD compatibility is listed. It transmits motor torque into the gearbox while the one-way allows freer rotation in one direction under slip, which can be useful when adjusting rear-wheel behaviour for drifting.

Before installation: check matching splines and bearing condition, confirm correct one-way orientation, and ensure sufficient clearance to the spur gear and gearbox case. Use threadlocker where recommended and verify wheel alignment after assembly. Familiarity with basic gearbox servicing is assumed.

Specifications

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

Fit this shaft when a MR-4TCSD drive part needs replacement or when testing one-way functionality in drift package drivetrains, and carry out standard gearbox checks after fitting.
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.

What checks are essential before fitting this shaft?

Confirm spline size and engagement, inspect bearing surfaces for wear, and ensure the one-way component moves freely prior to final assembly.

Will this change durability under high loads?

Durability depends on material and usage. The listing does not specify material, so monitor the part under your typical loads and replace if signs of wear appear.

How do I secure fasteners when installing?

Use suitable torque values for your chassis, apply threadlocker where recommended, and avoid over-tightening which can damage splines or bearings.

Should I recheck alignment after first run?

Yes. After first test runs, recheck gear mesh and wheel alignment to ensure nothing has shifted under load.

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