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

Pitching-Damp Spring Overview

The Yokomo YOKYX-40SS is a purpose-built RC shock spring for pitching-damp style shock assemblies. It functions as a direct replacement or a tuning spring for general R/C shock units where managing chassis pitch is a setup priority. The silver coating offers a clean cosmetic finish to complement model car aesthetics.

Fitting is simple on standard shock builds: remove the shock cap, compress the cartridge as needed, slide the spring over the damper shaft and seat it against the spring retainer or lower perch. Verify correct spring seating and set preload before reassembling to prevent binding or inconsistent travel.

From a tuning standpoint the spring changes pitching behaviour: a stiffer spring reduces nose dive and pitch during braking or acceleration, while a softer spring permits more pitch movement and a gentler initial response. Pair this spring with suitable damper oil and piston choices for balanced setup changes, and confirm handling changes during practice runs.