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

Reinforcement plate for the YZ-4 upper deck

This aluminum upper deck plate is an optional upgrade for the Yokomo YZ-4 4WD off-road chassis. It mounts to the upper deck front and rear fixing points to produce a stiffer connection across the chassis crown.

The added rigidity affects pitching and roll characteristics and serves as a straightforward setup option for altering handling balance. Fitments of this type are used to reduce body flex during acceleration or braking and to refine mid-corner movement without modifying suspension geometry.

Fitting is straightforward: the plate attaches at the standard YZ-4 upper deck front and rear points. Typical assembly requires only common hex drivers, and you may need to alter other setup items to fine tune the handling outcome.