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

Yokomo Y4-631 Main Gear Shaft for DP-YD4
Price:
CAD$5.52
Brand:
Yokomo
Model:
Y4-631
GTIN:
3888
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Or you may find similar product under the
Spares / Hop-ups - Yokomo - YD-4 category
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YD-4 series main shaft specifications

This replacement main gear shaft matches the YD-4 standard parts set and is supplied to refresh worn or damaged drivetrain components. It is intended for use in DP-YD4 and DP-YD4MR chassis where the existing shaft requires renewal.

The shaft locates the spur gear and interfaces with the current gear stack and bearings. When fitting a new shaft, double-check spur gear mesh and bearing fit to preserve drivetrain alignment and minimise slack.

Fitting is a simple swap using the gearbox mounting points. Inspect nearby parts for wear during the service and perform a low-speed run after installation to ensure smooth engagement before full-power operation.

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.

Will this shaft drop into the DP-YD4MR gearbox without modification?

Yes. The shaft is listed as compatible with DP-YD4MR and installs into the standard gearbox mounting used on those chassis without alteration.

Do I need extra parts to complete the swap?

No extra hardware is required for a direct replacement, but you should inspect the bearings and spur gear for wear and replace them if they show damage.

How should I verify gear mesh after fitting the new shaft?

Set a conservative mesh with minimal backlash, rotate the drivetrain by hand to check for binding, then perform a low-speed test to confirm smooth engagement before running at full speed.

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