Yokomo BD9 Aluminum Lower Caster Block B9-RTC-02A for RCT  [B9-RTC-02A]

Yokomo B9-RTC-02A RTC Aluminum Lower Caster block
Price:
CAD$39.63
Brand:
Yokomo
Model:
B9-RTC-02A
GTIN:
0639342182732
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Or you may find similar product under the
Spares / Hop-ups - Yokomo - MRTC-BD10FF category
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Installation-focused aluminum lower caster for BD9

This aluminum lower caster block is an RC-scale replacement part intended for Yokomo BD9 2019 platforms. It becomes the mounting base for a rear RCT assembly, creating the connection between the steering block and the suspension arm.

Manufactured to replace the plastic lower caster, this metal unit resists deformation under load and helps keep caster and toe geometry steady when rear steering components are fitted or tuned.

Installation is straightforward: remove the original lower caster block from the suspension arm, seat the aluminum unit in place, and fasten using the existing hardware from the chassis. Recheck alignment and fastener torque after the first run to confirm geometry and secure fit.

Specifications

  • Item: Aluminum lower caster block
  • Material: Aluminum
  • Model Number: B9-RTC-02A
  • Compatibility: MRTC-BD919, MRTC-BD919S, MRTC-BD10FF

Compatibility

  • MRTC-BD919
  • MRTC-BD919S
  • MRTC-BD10FF

Choose this lower caster block when you want a reliable metal mounting point for rear RCT installs on supported Yokomo BD9 series chassis to preserve steering geometry under load.
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.

How do I remove the stock lower caster to fit this part?

Loosen and remove the original fasteners that secure the plastic lower caster, lift it clear from the suspension arm, then position the aluminum block and refit the same bolts. Keep track of any shims or washers and reinstall them in the same order.

Should I reuse the original screws and hardware?

Yes, in most cases the factory fasteners will work. Confirm thread fit and that head clearance is correct; if hardware shows wear, replace with equivalent-grade screws to maintain secure clamping.

Any alignment checks after fitting?

After installation, verify caster and toe settings with the car on a flat surface and tighten fasteners to the recommended torque. A short test run and a quick recheck of geometry will catch any loosening or seating shifts.

Do I need special tools to fit the block?

No special tools are required beyond the standard hex driver set used on your chassis. A torque driver is recommended for consistent fastener tightening.

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