Rear Shock Spring YOKBMS12105 by Yokomo  [YOKBMS12105]

Overview of Rear Shock Coil

This part is a rear shock coil supplied as a replacement for hobby R/C rear shock assemblies. It is presented for use in common shock cartridges and towers when the spring outer diameter and seat arrangement are compatible.

The coil serves to control rebound, compression and rear squat behaviour; changing spring rate or preload will influence ride height, midstroke support and resistance to bottoming. Treat the spring as a tuning component to be matched with other suspension settings for best results.

Basic installation: detach the shock from the model, reduce preload, slide the spring over the shaft and reset retainers to the chosen preload. Inspect the shaft and mounting points for wear and confirm full free stroke after fitment to ensure no binding is present.

Tuning recommendations: modify preload to alter ride height and initial stiffness, select spring rates according to surface and driving style, and always combine spring swaps with damper oil and piston tuning to preserve consistent behaviour across the full travel.