--- product_id: 23568012 title: "KG4503 Gas-a-Just Gas Shock" brand: "kyb" price: "S$108" currency: SGD in_stock: true reviews_count: 5 category: "Kyb" url: https://www.desertcart.sg/products/23568012-kg4503-gas-a-just-gas-shock store_origin: SG region: Singapore --- # High gas pressure for instant control Monotube design, no performance fade 25% more damping power KG4503 Gas-a-Just Gas Shock **Brand:** kyb **Price:** S$108 **Availability:** ✅ In Stock ## Summary > ⚡ Elevate your classic ride with instant, fade-free control! ## Quick Answers - **What is this?** KG4503 Gas-a-Just Gas Shock by kyb - **How much does it cost?** S$108 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/23568012-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. Review: Good value. - Good shocks. Stiffer than OE. Great for a heavy car. They lifted the front of my ‘61 TBird slightly. Review: 1954 Hudson Hornet - This is a perfect fit for the 1954 Hudson Hornet. Installed without any modifications. Since I’m doing other work & the car is not driveable I’ll update when I do drive it. Assuming desertcart allows the review to be updated. I can say that compared to the Monroe shocks it replaced these appear to be a much higher quality shock. Why? 1) they have a full steel cover for the rod unlike Monroe, which protects from damage to the rod & subsequent internal seals. 2) they included 2 nuts for each mounting point, thus preventing an unexpected loosening of the one nut at each mounting point the Monroe’s came with. Additionally I used the KYB app to check the compressed & extended lengths as well as listed applications & cross referencing of other shock numbers. Definitely a very good app. The only down side is the instructions are a weird array of photos & no written words. ## 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 ![KG4503 Gas-a-Just Gas Shock - Image 1](https://m.media-amazon.com/images/I/51pdnOHbF-L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good value. *by B***L on March 18, 2021* Good shocks. Stiffer than OE. Great for a heavy car. They lifted the front of my ‘61 TBird slightly. ### ⭐⭐⭐⭐ 1954 Hudson Hornet *by D***S on July 25, 2021* This is a perfect fit for the 1954 Hudson Hornet. Installed without any modifications. Since I’m doing other work & the car is not driveable I’ll update when I do drive it. Assuming Amazon allows the review to be updated. I can say that compared to the Monroe shocks it replaced these appear to be a much higher quality shock. Why? 1) they have a full steel cover for the rod unlike Monroe, which protects from damage to the rod & subsequent internal seals. 2) they included 2 nuts for each mounting point, thus preventing an unexpected loosening of the one nut at each mounting point the Monroe’s came with. Additionally I used the KYB app to check the compressed & extended lengths as well as listed applications & cross referencing of other shock numbers. Definitely a very good app. The only down side is the instructions are a weird array of photos & no written words. ### ⭐⭐⭐⭐⭐ nice ride *by S***. on April 19, 2022* No problems installing. Improved ride quality a lot. --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sg/products/23568012-kg4503-gas-a-just-gas-shock](https://www.desertcart.sg/products/23568012-kg4503-gas-a-just-gas-shock) --- *Product available on Desertcart Singapore* *Store origin: SG* *Last updated: 2026-05-18*