Yokomo YOKY4S8 SLF Big Bore shock cap ball set, 4pcs for YD-4 dampers  [YOKY4S8]

YOKY4S8 shock cap balls for YD-4

The Yokomo YOKY4S8 shock cap ball set supplies replacement cap balls intended for SLF big-bore dampers used on the YD-4 platform. Sold as a 4pcs set, these parts serve the specific role of the cap ball interface inside the shock cap assembly, helping maintain consistent piston alignment and predictable shock response during runs.

This is an RC-scale replacement component designed for use only on radio-controlled models; it is not intended for full-size vehicles. Keep compatibility to YD-4 confirmed when ordering to ensure correct fit with your damper top assembly.

Installation is straightforward for anyone familiar with disassembling oil-filled dampers: remove the shock cap, inspect the existing cap ball for wear, and replace with the new item while confirming smooth rotation and secure seating. Use standard shock servicing tools and follow your damper oil and seal precautions to avoid contamination.

Tuning role: the cap ball is a small but important contact point that influences seal alignment and piston motion within big-bore SLF shocks. Replacing worn cap balls helps retain steady damping behaviour, reduces play at the cap interface, and supports repeatable setup changes when adjusting oil weight, piston selection, or spring preload.

Compatibility

• YD-4