Yokomo Y4-631 Main Gear Shaft for DP-YD4 / DP-YD4MR  [Y4-631]

Yokomo Y4-631 Main Gear Shaft for DP-YD4
Price:
£2.96
Brand:
Yokomo
Model:
Y4-631
GTIN:
3888
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Spares / Hop-ups - Yokomo - YD-4 category
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Product brief: main gear shaft for YD-4 chassis

This main gear shaft is part of the YD-4 standard parts offering and is provided as a replacement when the existing shaft shows wear or damage. It is suitable for use in DP-YD4 and DP-YD4MR models to restore correct gearbox support.

In service the shaft locates the spur gear and functions with the assembled gear stack and bearings. When renewing the shaft, check mesh and bearing engagement carefully to maintain drivetrain geometry and prevent unnecessary movement.

Replacement uses the existing gearbox mounting points and is a straightforward service job. Inspect surrounding components for wear at the same time and carry out a low-speed run to confirm smooth operation before full-power use.

Model compatibility

  • DP-YD4
  • DP-YD4MR
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 fit this shaft into both DP-YD4 and DP-YD4MR gearboxes?

Yes. The part is listed as compatible with both DP-YD4 and DP-YD4MR and fits the standard gearbox mounting configuration used on those chassis.

Should I change the spur gear or bearings at the same time?

It is good practice to inspect and, if needed, replace worn bearings or the spur gear when replacing the shaft to ensure long-term reliability and correct alignment.

Recommended procedure after fitting the new shaft?

After installation, check spur gear mesh, confirm bearings are seated correctly, and run the model at low speed to verify smooth drivetrain operation before normal use.

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