BD9 Central Weight 40g - Yokomo B9-BW40A  [B9-BW40A]

Yokomo B9-BW40A Center Balance Weight (40g)
Price:
£12.74
Brand:
Yokomo
Model:
B9-BW40A
GTIN:
0639342182626
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Spares / Hop-ups - Yokomo - MRTC-BD919S category
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alt="Yokomo B9-BW40A Center Balance Weight (40g)" title="Yokomo B9-BW40A Center Balance Weight (40g)"
alt="Yokomo B9-BW40A Center Balance Weight (40g)" title="Yokomo B9-BW40A Center Balance Weight (40g)"

BD9 central weight overview

The Yokomo B9-BW40A is a 40g centre balance weight designed for BD9-series applications. Positioned at the chassis centre, it lets tuners adjust the car's mass distribution to influence handling dynamics like roll entry and pitch sensitivity while keeping overall balance stable.

Made for BD9-compatible chassis, this unit is a simple way to add centre ballast during setup work on electric touring models. Fitting at the centre ensures the change affects global mass behaviour rather than changing corner-specific loads.

Specifications

  • Item: Center balance weight
  • Model Number: B9-BW40A
  • Weight: 40g
  • Compatibility: MRTC-BD919 / MRTC-BD919S

Compatible Models

  • MRTC-BD919
  • MRTC-BD919S

Use the B9-BW40A to refine centre ballast when tuning for more predictable chassis behaviour and consistent lap performance.
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 does central ballast affect corner entry?

Adding central ballast generally reduces pitch at corner entry and can calm forward weight transfer, resulting in a more settled front end if used modestly.

Can small increments change lap time?

Small changes to centralized mass can influence balance and tyre loading; test in small steps to judge lap time impact during practice runs.

Should I use this instead of corner ballast?

Central ballast serves a different purpose to corner weights and is best used alongside corner adjustments when you need to alter global pitch/roll rather than individual corner behaviour.

Does the specification list the weight value?

Yes, the specification lists the B9-BW40A as a 40g unit.

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