Yokomo BD9 Magnesium Chassis Plate - Arrowmax AM-900004  [AM-900004]

BD9 magnesium stiff plate for stronger chassis

This Arrowmax magnesium stiff plate is made for the Yokomo BD9 1/10 touring car chassis. It is intended to boost chassis stiffness so suspension and weight changes return a more repeatable response. The notes below explain where to place this part in a tuning workflow, what to check during fitting, and the handling shifts you should expect.

Compatibility and role: designed for the Yokomo BD9 chassis, the plate functions as a direct replacement or an upgrade to the stock lower or upper chassis piece depending on your BD9 model, reducing flex and improving steering precision. Installation pointers: it utilises the BD9 mounting points and existing hardware; transfer original screws and spacers and confirm alignment at each location before final tightening. Tuning considerations: more rigid chassis behavior typically yields crisper initial turn and steadier mid-corner grip, so reassess shock settings and anti-roll bar rates to rebalance the car.

Fit guidance

Intended for the Yokomo BD9 range; confirm your BD9 variant before fitting to ensure correct mounting orientation and that the original hardware will work.

Technically written and neutral in claim, the Arrowmax AM-900004 magnesium plate provides a simple tuning route to lower chassis flex and deliver more repeatable handling on Yokomo BD9 touring cars.