The Arrowmax AM Medius chassis plate, reference AM-920022, is an aftermarket front-wheel-drive replacement compatible with the Yokomo BD9. Manufactured from 7075 aluminium at 2.0mm, it provides a controlled change in chassis stiffness without altering the primary BD9 layout.
Track-focused drivers choose a blank plate like this to achieve repeatable changes in torsional rigidity that influence initial turn-in and stability through mid-corner. Use it as a direct swap when you need a firmer baseline or are replacing a damaged factory plate.
Fitting follows the usual BD9 service routine: remove the OEM plate, transfer the original mountings and any reinforcement pieces, then install this plate using the same fasteners. Confirm hole alignment and clearances at suspension pick-ups before final torque. No special parts are generally required.
When a 2.0mm 7075 plate is part of your setup plan, AM-920022 gives a direct Arrowmax option to tune BD9 stiffness and balance; always validate fit and re-assess handling after any change.
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