YZ-4 Aluminum Upper Deck Plate for Yokomo YZ-4 Z4-003P  [Z4-003P]

Stiffening plate tailored to the YZ-4

This aluminum upper deck plate is offered as an aftermarket accessory for the Yokomo YZ-4 4WD off-road chassis. It clamps the front and rear points of the upper deck to produce a stronger, more unified chassis top section.

Adding this plate increases chassis stiffness and changes pitching and roll characteristics, making it a practical tuning lever for handling balance. Racers use it to reduce flex during bursts of power or hard braking and to refine body movement through corners without altering suspension geometry.

Fitment is direct: attach the plate to the YZ-4 upper deck front and rear mounts and maintain the standard YZ-4 layout. Installation requires common hex drivers, and you may need to adjust other setup parts to achieve the handling you prefer.