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

Aluminum main chassis for YZ-4S

The Yokomo S4-002SA is an aluminum main chassis intended as a direct replacement for YZ-4S series models. It is produced with a hard anodized finish to improve surface wear resistance and provide a stable mounting base for electronics, suspension, and drivetrain components within standard 1/10 scale touring RC layouts.

As a structural part, the main chassis controls baseline stiffness and weight distribution; swapping from a stock material to aluminum alters flex characteristics that affect cornering balance and feedback through the suspension. Use this chassis when you need a predictable platform for setup changes, for example comparing different shock settings, roll centers, or weight placement.

Installation notes: remove electronics and drivetrain before replacement, retain original screw locations and hardware where possible, and test-fit servo, ESC, and motor positions prior to final assembly. Check thread condition on mounting points and tighten fasteners progressively to avoid distortion. This chassis is intended for scale RC use only and fits the specified models listed below.

Use the S4-002SA when you want a stable aluminum baseline for tuning YZ-4S platforms; confirm fitment with your existing mount hardware and re-check fastener torque after initial runs.