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

Yokomo BD-501GS Steel Drive Cups for Gear Differential
Price:
CAD$7.04
Brand:
Yokomo
Model:
BD-501GS
GTIN:
3888
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Replacement steel drive cups for BD5/BD7 gearboxes

This is a replacement steel drive cup designed for BD5/BD7 series gear differential units. The component serves as the interface between the differential output and the drive shaft, and is specified as a direct-fit replacement for the models listed in the compatibility section.

Use this part when inspecting or rebuilding a gear differential to restore a solid fit at the output interface or when worn drive cups are producing slop or uneven engagement. As a steel part, it is chosen for wear resistance compared with softer alloys, and is intended purely for RC-scale gear differentials.

Installation requires removing the differential from the chassis, separating the differential case if fitted, and transferring the drive cup onto the output shaft following the differential manufacturer's service practice. Verify radial runout and fit after installation and reassemble the differential to the chassis before testing under low load to confirm correct engagement.

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.

Which MRTC chassis are compatible with this drive cup?

Refer to the compatibility list above. The BD-501GS is intended to fit the MRTC BD7 and BD8 series variants shown in that list.

What is the material and why choose steel?

This part is made from steel to provide improved wear resistance at the differential output compared with softer alloys, helping maintain a tighter fit over time.

Any setup checks after installing the new drive cup?

After fitting, check radial runout and shaft fit, then reassemble and test the differential under light load to ensure correct engagement before full-speed use.

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