Yokomo BD9 MID Chassis Topdeck 2.0mm Hard Type 2 - Arrowmax AM-910021  [AM-910021]

MID topdeck solution for BD9 MID layout

The AM-910021 AM Medius MID Topdeck from Arrowmax is a 2.0mm Hard Type 2 replacement plate intended for the Yokomo BD9 MID chassis. Positioned in the middle of the chassis, it changes torsional character to help tune handling.

This topdeck is aimed at fine-tuning: raising torsional stiffness in the MID area to influence steering feel and balance during laps. It is offered as a direct-fit hop-up for the BD9 MID arrangement and should be used as part of chassis setup work rather than as an isolated horsepower or traction fix.

Installation notes: the component replaces the MID topdeck section and mounts to the same points used by the OEM AM Medius topdeck on BD9 MID variants. No separate hardware is specified, so use existing fasteners and adhere to manufacturer recommended torque practices.

Install this topdeck to stiffen the MID section and refine handling; pair with incremental suspension and anti-roll tuning to assess changes in turn-in and mid-corner stability.