Yokomo YOKYX-40SS Replacement Shock Spring (Silver) for Pitching Damp  [YOKYX-40SS]

Installing the Pitching-Damp Spring

The Yokomo YOKYX-40SS is a dedicated spring for pitching-damp style shock assemblies, suitable as a replacement or setup spring for general R/C shocks focused on pitch control. The silver finish gives a tidy, coordinated appearance on scale models.

Installation is straightforward: take off the shock cap, compress the shock body if required, slide the spring down the shaft and seat it against the retainer or lower spring perch. Ensure correct seating and set preload before reassembly to avoid binding and to secure consistent travel.

For setup work, this spring affects pitching behavior—stiffer springs reduce forward or rearward pitch during braking and acceleration, while softer springs increase pitch compliance. Adjust spring choice together with damper oil and pistons to reach the desired handling balance, and validate changes during test laps.