Yokomo BD9 Chassis Plate Arrowspace Mg Extra Flex Upgrade - Arrowmax AM-900006  [AM-900006]

Arrowspace magnesium extra-flex upgrade plate

This Arrowspace magnesium chassis plate is supplied by Arrowmax for the Yokomo BD9 touring car platform and is presented as a direct-fit aftermarket option for builders refining handling. The "Extra Flex" descriptor indicates expected chassis behaviour to factor into set-up choices rather than providing a numeric stiffness value.

In practice the plate alters the BD9's torsional response and the way load moves through the suspension; model tuners include it in a broader set-up schedule with changes to springs, dampers and ride height. It replaces the stock chassis panel where a magnesium part and altered flex characteristics are sought.

Fitting is within the scope of normal RC workshop skills: remove the factory BD9 plate, ensure mounting holes align, and fit with the existing fasteners to maintain original geometry. Check clearances for the ESC and battery and verify drivetrain alignment after refit. During tuning, assess corner entry and mid-corner balance before adjusting other set-up elements so the plate's effect can be isolated.

Use this part as a component of gradual testing: note changes to damper and spring settings while judging handling, and return to the original chassis if you need to reset to the factory baseline.