BD9 RTC Separate Suspension Mount A Aluminium 39.5-42.7mm B9-RTC-04A Yokomo  [B9-RTC-04A]

Yokomo B9-RTC-04A RTC Separate suspension mount A for BD9
Price:
£17.97
Brand:
Yokomo
Model:
B9-RTC-04A
GTIN:
0639342182756
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Or you may find similar product under the
Spares / Hop-ups - Yokomo - MRTC-BD10FF category
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Rear suspension front-side RTC mount for BD9

This aluminium separate suspension mount is designed to be fitted to the front side of the rear suspension mount when the BD9 is using the RTC option. It replaces the resin suspension mount bushes and supplies a defined, machined interface for the suspension pins.

Replacing resin bushes with this aluminium mount allows controlled adjustments to the left-to-right suspension pin spacing, enabling subtle rear-end setup changes to refine handling and stability.

Specifications

  • Item: RTC Separate suspension mount A
  • Material: Aluminum
  • Model Number: B9-RTC-04A
  • Compatibility: BD9 with RTC option
  • Adjustment range: 39.5mm to 42.7mm

Compatible Models

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

Opt for this part when you need a solid aluminium replacement for the standard resin bushes on BD9 RTC rear mounts, delivering consistent fitment and a clear adjustment window for rear-end tuning.
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 swapping to aluminium reduce unwanted flex?

Yes. The aluminium mount provides a stiffer, machined seating surface compared with resin, which reduces movement at the suspension pins under load.

Which models are confirmed compatible?

Compatibility aligns with the BD9 chassis variants that support RTC, specifically MRTC-BD919, MRTC-BD919S, and MRTC-BD10FF as listed.

Can this be used without the RTC option?

This mount is designed for use with the BD9 RTC configuration; using it outside of that intended mounting arrangement may not provide expected fitment or adjustment benefits.

What checks should be done after fitting?

After installation verify pin spacing, confirm alignment, and inspect that the mount is seated correctly in place before running the car to ensure predictable handling.

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