Yokomo S4-002SA Main Chassis (Hard Anodized) for YZ-4S  [S4-002SA]

Precision aluminum chassis crafted for YZ-4S platforms

The Yokomo S4-002SA offers a hard anodized aluminum main chassis intended to replace the stock plate on YZ-4S series models. Its tough surface finish reduces wear and provides a rigid base for mounting electronics, suspension components, and drivetrain parts in 1/10 scale touring configurations.

Being the key structural element, the main chassis influences the car's baseline rigidity and how weight is distributed across the car. Moving from a stock material to aluminum changes flex behavior and thus impacts cornering balance and the feel transmitted through the suspension. Install this chassis when you want a repeatable foundation for evaluating different shock settings, roll center changes, or weight shift experiments.

Installation guidance: remove electronics and drivetrain components before you start, keep original screw positions where compatible, and trial-fit servo, ESC, and motor placements before final assembly. Verify thread integrity on mounting bosses and tighten bolts gradually to prevent warping. This chassis is for scale RC use only and fits the listed models below.

Fit the S4-002SA when you need a reliable aluminum platform for tuning YZ-4S cars; always confirm fit against your existing mounts and retorque fasteners after the first outings.