Yokomo BD9 MID Tunable Topdeck 2.0mm - Arrowmax AM-910020  [AM-910020]

Arrowmax AM-910020 AM Medius Yokomo BD9 MID Topdeck 2.0mm Type 1
Price:
AUD$30.96
Brand:
Arrowmax
Model:
AM-910020
Condition:
Brand New
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Mid-Layout Topdeck for Yokomo BD9

The Arrowmax AM-910020 topdeck is an RC-spec replacement tailored to the Yokomo BD9 MID configuration, produced at a 2.0mm thickness. It acts as the upper chassis plate connecting front and rear bulkheads and contributes to the car's torsional stiffness.

Designed with setup in mind, this topdeck lets drivers influence mid-corner balance and how the car responds to sudden inputs by changing deck stiffness rather than suspension geometry. Fit it as a direct replacement where the BD9 MID topdeck is called for to retain mounting accuracy.

Installation is straightforward on conventional BD9 MID cars—remove the current plate, align bolt holes and fasten screws uniformly to preserve planarity. For setup, change the topdeck and perform controlled tests, recording handling notes to isolate stiffness effects on understeer, oversteer and straight-line behaviour.

Specifications

  • Item: Topdeck
  • Material: Not specified
  • Model Number: AM-910020
  • Compatibility: Yokomo BD9 MID

As an upgrade option for the Yokomo BD9 MID chassis, this topdeck is aimed at drivers who adopt a step-by-step tuning approach; use it to evaluate stiffness changes within a structured setup routine.

Run back-to-back laps with the same tyres and conditions, note differences in mid-corner balance and transient response, and record lap times to quantify changes.
Check servo and receiver placement for clearance, and ensure battery spacing is unaffected; some aluminium bulkheads or mounts can alter stack height so verify fit.
Yes, altering deck stiffness is one way to change chassis behaviour while keeping springs and dampers constant, but you may still need small damper tweaks to optimise balance.
The deck itself has no break-in, but expect handling to settle over a few practice runs as tyres and suspension warm and drivers adapt to the new feel.

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