BD5/BD7 Steel Drive Cup for Gear Differential BD-501GS - Yokomo  [BD-501GS]

Yokomo BD-501GS Steel Drive Cups for Gear Differential
Price:
AUD$7.10
Brand:
Yokomo
Model:
BD-501GS
GTIN:
3888
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Spares / Hop-ups - Yokomo - BD5 category
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Durable steel drive cups for BD5/BD7 differential outputs

This item is a replacement steel drive cup manufactured for BD5/BD7 series gear differentials. It interfaces the differential's output with the drive shaft and is supplied as a direct replacement for the compatible models listed in the compatibility section.

Use the steel cup during rebuilds or when worn components cause slack or irregular engagement. Steel is selected here for greater wear resistance versus softer alloys, making it suitable for RC gear differential service where longevity is desired.

To fit, remove the differential assembly from the chassis, open the differential case if required, and install the drive cup onto the output shaft following the differential manufacturer's service procedure. After fitting, check runout and shaft fit, then reassemble and bench-test under light load before full operation.

Compatibility

  • MRTC-BD7RS
  • MRTC-BD7RS2
  • MRTC-BD715B
  • MRTC-BD715O
  • MRTC-BD715S
  • MRTC-BD716
  • MRTC-BD716H
  • MRTC-BD716O
  • MRTC-BD716S
  • MRTC-BD7RS3S
  • MRTC-BD8
  • MRTC-BD8A
  • MRTC-BD8-P
  • MRTC-BD8AP
  • MRTC-BD8SV
  • MRTC-BD818A
  • MRTC-BD818
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 drive cup work on my BD8 variant?

Yes, the BD-501GS is listed for a range of BD8 variants in the compatibility section. Confirm your exact model code against the list to ensure fitment.

How does steel affect wear compared to alloy cups?

Steel offers higher surface hardness and better wear resistance, which reduces deformation and helps keep engagement consistent over longer service intervals.

Any alignment checks after fitting?

After installation, verify radial runout and the seating of the drive cup on the output shaft. Reassemble the differential and perform a cautious low-load check to confirm proper operation.

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