YOKBMS12105 Rear Shock Spring Compatible with Yokomo  [YOKBMS12105]

Product Summary — Rear Shock Spring

This rear shock spring is supplied as a spare part for hobby R/C rear shock units and is intended for use where the spring diameter and seating arrangement match available shock retainers. It is an accessory aimed at common hobby car shock cartridges and towers.

The coil spring controls rebound, compression and tendency to squat at the rear; altering spring rate or preload changes ride height, midstroke support and bottoming resistance. Use the spring as one element in a balanced suspension setup rather than expecting it alone to resolve all handling issues.

Installation is straightforward: remove the shock from the vehicle, back off preload, slide the spring onto the shaft and locate retainers to obtain the needed preload. Check the shock shaft and eyelets for wear and ensure the shock moves freely after reassembly to prevent binding.

Practical setup suggestions: adjust preload for ride height and initial rate, select different spring rates to match surface and driving style, and pair spring changes with damper oil and piston selection to maintain consistent behaviour across the travel.