---
title: RC Truck Shock Absorber Upgrade: DIY Guide for Smooth Rides
siteUrl: https://logzly.com/rcvehicleshub
author: rcvehicleshub (RC Vehicles Hub)
date: 2026-08-11T10:54:03.832677
tags: [rc_truck, shock_upgrade, diy]
url: https://logzly.com/rcvehicleshub/rc-truck-shock-absorber-upgrade-diy-guide-for-smooth-rides
---


Your RC truck is bouncing like a jackhammer on dirt, and every bump feels like it’s shaking your hands. The **RC truck shock absorber upgrade** below eliminates that vibration in minutes with a handful of inexpensive parts and basic tools. Follow the step‑by‑step instructions and you’ll turn a shaky ride into a buttery‑smooth experience—no special workshop required.

## Why Stock Shocks Feel Like a Jackhammer  

The factory shocks are cheap, single‑tube units with a tiny piston and a thin oil chamber. When the piston hits the end of the cylinder, the oil has nowhere to flow, so the shock rebounds hard and the chassis vibrates. Upgrading to a two‑tube design gives the oil room to move, providing true damping and a **smooth ride** on rough terrain.

## Parts List for the Upgrade  

- **2.2 mm bore aluminum outer tubes** (pair)  
- **1.5 mm inner pistons** with adjustable spring preload  
- **Silicone‑based oil** – about 10 ml total  
- Tiny dab of **grease** for the piston seals  
- Tools: small hex driver, needle‑nose pliers, lint‑free rag  

All of these items are available at most hobby shops or online RC suppliers.

## Preparing the Mounting Points  

1. **Remove the old shocks** – Use the hex driver to unscrew the two mounting bolts per shock, then pull the shock out gently.  
2. **Clean the holes** – Wipe each mounting pocket with a lint‑free rag to clear dust and old grease. Clean surfaces let the new shocks seat firmly and prevent premature wear.

## Assembling the New Shock Tubes  

1. Slide the inner piston into the outer aluminum tube.  
2. **Add silicone oil** – Pour roughly 5 ml of oil into the tube, then tap the piston a few times so any trapped air rises and escapes.  
3. **Apply seal grease** – Place a tiny dab of grease around the piston seal; this reduces friction and stops the piston from sticking during compression.

## Installing the Upgraded Shocks  

- Insert the assembled shock back into its mounting holes.  
- Tighten the two bolts just enough to stop wobble—over‑tightening will bind the piston.  
- **Set the preload** to the midpoint by turning the preload knob halfway between fully loose and fully tight. Adjust one notch softer or firmer later if needed.

## Test Drive & Fine‑Tuning  

Take the truck onto a mixed‑surface track and listen for harsh clicks. If vibration persists, add a few more drops of silicone oil or back the preload knob a notch toward softer. The goal is a controlled dip over bumps with no rattling.

## Results You Can Expect  

After the upgrade, the truck glides over dirt, gravel, and even smooth pavement. The wheels stay in contact with the ground longer, giving better traction and tighter cornering. Most hobbyists report a dramatic reduction in chassis shake—essentially turning a jittery boardwalk ride into a well‑paved road experience.

## Quick Checklist  

- ✅ Remove & clean old shocks  
- ✅ Assemble tubes with oil & grease  
- ✅ Install, tighten bolts, set midpoint preload  
- ✅ Test, then fine‑tune oil amount or preload as needed  

Give this **RC truck shock absorber upgrade** a try, and share your results in the comments. If you found the guide helpful, spread the word and subscribe for more simple, high‑impact RC tips. Happy tinkering!