Yokomo YS-4L-8 Rear Shock Body for Off-Road R/C  [YS-4L-8]

YS-4L-8 Rear Damper: Service Overview

The Yokomo YS-4L-8 R. Shock Body is a scale replacement component made for rear damper assemblies on off-road R/C models. It serves as the outer housing that locates internal damper parts and helps preserve repeatable piston travel and reliable seal positioning.

Fit this part when a shock body is worn, cracked, or when you need to swap components during suspension setup. Typical service steps apply: drain the shock oil, remove the cap and shaft assembly, transfer internal components carefully, and confirm O-rings and seals seat correctly before refilling. This component is designed solely for R/C models and should not be represented as suitable for full-size vehicles.

For tuning, the body improves serviceability and inspection of piston movement; it does not change piston diameter or valving by itself but supports consistent assembly during iterative tuning. On reassembly, check for burrs, ensure O-rings are correctly seated, and verify shaft clearance to minimise leakage and maintain consistent damping.