---
product_id: 23568012
title: "KYB KG4503 Gas-a-Just Gas Shock"
brand: "kyb"
price: "$93.50"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/23568012-kyb-kg4503-gas-a-just-gas-shock
store_origin: US
region: United States of America
---

# High gas pressure for instant control Monotube design, no performance fade 25% more damping power KYB KG4503 Gas-a-Just Gas Shock

**Brand:** kyb
**Price:** $93.50
**Availability:** ✅ In Stock

## Summary

> ⚡ Elevate your classic ride with instant, fade-free control!

## Quick Answers

- **What is this?** KYB KG4503 Gas-a-Just Gas Shock by kyb
- **How much does it cost?** $93.50 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/23568012-kyb-kg4503-gas-a-just-gas-shock)

## Best For

- kyb enthusiasts

## Why This Product

- Trusted kyb brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Monotube Advantage:** Advanced monotube design outperforms traditional twin-tube shocks for superior handling and durability.
- • **Muscle Car Mastery:** Specifically engineered valving for classic muscle cars ensures authentic performance and ride quality.
- • **Fade-Free Performance:** Unique air-free hydraulic piston eliminates shock fade, maintaining consistent control mile after mile.
- • **Instant Control Boost:** High-pressure nitrogen gas chamber delivers immediate damping response when you need it most.
- • **Precision Fit & Finish:** Vehicle-specific fit with machined steel and aluminum construction for reliable, long-lasting performance.

## Overview

The KYB KG4503 Gas-a-Just shock absorber is a high-performance monotube upgrade designed specifically for classic muscle cars. Featuring a unique dual-chamber system with high-pressure nitrogen gas and an air-free hydraulic piston, it delivers up to 25% more damping power and eliminates performance fade for consistent, responsive handling. Built with durable steel and aluminum, it offers a precise vehicle-specific fit and superior ride quality.

## Description

The KYB Gas-a-Just monotube shock absorber has additional performance advantages over the traditional twin-tube design: It can instantly, automatically adjust to your performance needs and never experiences fade due to aeration. The Gas-a-Just is available as an OE monotube replacement and as an OE twin-tube performance upgrade. The KYB Gas-a-Just has two separate working chambers: An air-free hydraulic piston and valve area for responsiveness & control, and a second high-pressure nitrogen gas area with a floating piston that provides a comfortable ride during normal driving and adds instant performance on demand.

## Features

- Adds up to 25% more damping performance over original equipment shocks
- Components and valving designed specifically for classic muscle cars
- High gas pressure design provides instant, extra control
- monotube design outperforms all other standard shock absorbers
- Unique, air-free, hydraulic unit eliminates performance fade

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KYB |
| Auto Part Position | Rear |
| Style | Traditional,Classic |
| Vehicle Service Type | Car |
| Exterior Finish | Machined |
| Material | Steel, Aluminum |
| Extended Length | 14.53 Inches |
| OEM Part Number | KG4503 |
| Global Trade Identification Number | 00781552045038 |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 781552045038 |
| Manufacturer | KYB |
| Model | Shock Absorber |
| Item Weight | 1.8 pounds |
| Item model number | KG4503 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | KG4503 |

## Product Details

- **Brand:** KYB
- **Auto Part Position:** Rear
- **Style:** Traditional,Classic
- **Vehicle Service Type:** Car
- **Exterior Finish:** Machined

## Images

![KYB KG4503 Gas-a-Just Gas Shock - Image 1](https://m.media-amazon.com/images/I/51pdnOHbF-L.jpg)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-08*