Yokomo BD9 FWD Topdeck 2.0mm Rear by Arrowmax AM-920024  [AM-920024]

Rear topdeck for BD9 FWD

This Arrowmax AM-920024 rear topdeck is an RC-scale replacement part intended for the Yokomo BD9 FWD layout, serving as the rear section of the mid-profile topdeck assembly. It is presented as a direct-fit accessory for riders who maintain BD9 chassis setups and need a consistent topdeck datum for suspension and balance tuning.

As a tuning component the topdeck affects chassis stiffness and the distribution of flex between front and rear. Installing the rear topdeck helps standardize mounting points for shock towers and servo link geometry, allowing iterative adjustments to roll center and traction without altering bulkhead or main chassis parts.

Installation notes: this part replaces the existing rear topdeck section and mounts to the factory screw locations on the BD9 rear assembly. During fitting, check alignment with the shock towers and battery tray, confirm clearance for the motor and driveshafts, and re-check fastener torque after initial test runs to ensure setup consistency.