--- product_id: 215223393 title: "DOZYANT 8\" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4" brand: "dozyant" price: "VT15368" currency: VUV in_stock: true reviews_count: 13 category: "Dozyant" url: https://www.desertcart.vu/products/215223393-dozyant-8-long-stroke-office-chair-gas-lift-cylinder-replacement store_origin: VU region: Vanuatu --- # 450 lbs heavy-duty capacity 8-inch adjustable stroke Smooth & noiseless 360° rotation DOZYANT 8" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 **Brand:** dozyant **Price:** VT15368 **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your office throne with power, precision, and peace. ## Quick Answers - **What is this?** DOZYANT 8" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 by dozyant - **How much does it cost?** VT15368 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vu](https://www.desertcart.vu/products/215223393-dozyant-8-long-stroke-office-chair-gas-lift-cylinder-replacement) ## Best For - dozyant enthusiasts ## Why This Product - Trusted dozyant brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Sustain Your Throne:** Replace sagging cylinders and extend your chair’s life without the cost of a new seat. - • **Elevate Your Comfort Zone:** 8-inch long stroke for precise height customization, perfect for tall professionals. - • **Whisper-Quiet Performance:** Experience seamless, noiseless 360-degree swivel that keeps your focus uninterrupted. - • **Built to Support Your Hustle:** Heavy-duty Class 4 gas lift cylinder engineered to hold up to 450 lbs with unwavering stability. - • **Universal Fit, Effortless Upgrade:** Standard 2-inch outer diameter fits most executive chairs—install in minutes, no extra screws needed. ## Overview The DOZYANT 8" Long Stroke Gas Lift Cylinder is a premium Class 4 hydraulic piston designed for executive office chairs. With an 8-inch adjustable stroke and a robust 450 lbs weight capacity, it fits most chairs with a 2-inch outer diameter. Engineered for smooth, noiseless 360-degree rotation, this heavy-duty replacement part offers an easy installation process, revitalizing your chair’s height and comfort for tall professionals seeking durability and ergonomic support. ## Description Description: Frustrated to find that the office chair you sit on for years start sagging or can’t go up and down anymore? But not ready to buy a new one because the rest of the chair is in perfect shape? Why not get to fix it by changing the gas lift cylinder by yourself? How to make sure the gas lift cylinder fits your office chair? Check the outer and inner diameter of your broken gas lift cylinder. This replacement part fits the one with an outer diameter of 2" and inner diameter of 1.1". How to install the gas lift cylinder on your own? 1. Tip the chair onto its side. 2. Use the rubber mallet to tap and remove the base of the chair away from the seat. 3. Use the pipe wrench to clamp tightly onto the top of the cylinder. Twist and then pull up in order to remove the cylinder. 4. Remove the orange cap of the new cylinder. Insert the bottom of the cylinder into the center of the chair base. 5. Carefully lift both the chair base and the chair cylinder into the chair mechanism. The parts will then fasten on their own. Specifications: - Material: Steel - Outer Cylinder Diameter: 2" - Inner Cylinder Diameter: 1.1" - Stroke: 8" - Bearing Capacity: 450 lbs Package Content: - 1 Office Chair Gas Lift Cylinder Review: Makes my Aeron a usable height, installation can be tricky if you have an old chair - This is a good cylinder and I love the height it adds. I viewed the installation instructions and watched some videos, but I did not have an easy time installing it because my chair was old, grimey and dusty. (The label on bottom said 2003) Tips if your chair is old like mine. 1. To get the existing cylinder out of the chair, you may need to whack it HARD. I used a 5lb sledge and a block of 2x4. Even then, it took SEVERAL hard whacks, putting all sorts of dents in the wood block. 2. Use an adjustable pipe wrench to unscrew the cylinder. The teeth on mine were leaving marks on old cylinder and it wouldn't budge. I eventually applied WD-40 at the top and that loosened it up enough to come off. There was a bunch of rust inside. 3. Once you install the new cylinder, you will have to pop off the plastic cover under the chair and adjust the set screw so it doesn't sag. After I did this, it worked perfectly. Review: Good product as the height adds comfort. The value is not just in the price but also the product. - Take a look at this product, it is well worth the purchase. For a taller chair seat, this does the job. It was a better and more sturdy lift-tube than my old one. It put my feet, knees and hips in a more neutral position for better comfort. Less cramped = more Comfort. A word though: it is an easy install once the old one is removed. Removing the old lift-tube can be tough. ## Features - 8" STROKE FOR ADJUSTING CHAIR HEIGHT: Minimum length: 11.2 inches; maximum length when fully extended: 22.5 inches; adjustable range: 8 inches - HEAVY DUTY Gas lift cylinder that holds great weights - tall center support column of the chair. Holds up to 450 lbs on most office, executive and computer chairs. Highest End Class 4 gas cylinder on market. - STANDARD CYLINDER DIAMETER: Outer cylinder: 2 inches, Inner cylinder: 1. 1 inches. Please confirm the measurement before ordering. - SMOOTH & NOISELESS: Full 360 degree rotation, smooth and noiseless movements to all directions - EASY INSTALLATION : Can be installed easily with no additional screws required. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B085XK494H | | Additional Features | Heavy Duty | | Age Range Description | Adult | | Arm Style | Armless | | Back Style | Solid Back | | Best Sellers Rank | #57,615 in Office Products ( See Top 100 in Office Products ) #1,330 in Office Furniture Accessories | | Brand Name | DOZYANT | | Customer Reviews | 4.4 4.4 out of 5 stars (931) | | Frame Material Type | Alloy Steel | | Furniture Base Movement | Swivel | | Indoor Outdoor Usage | Indoor | | Item Depth | 8 inches | | Item Dimensions | 2 x 2 x 11 inches | | Item Weight | 1.42 Kilograms | | Leg Style | Straight Leg | | Manufacturer | DOZYANT | | Material Type | Alloy Steel | | Maximum Weight Recommendation | 450 Pounds | | Model Number | QG-8 | | Pattern | Solid | | Product Care Instructions | Wipe Clean | | Reclining Position Count | 1 | | Recommended Uses For Product | Office | | Required Assembly | Yes | | Room Type | Office | | Seat Height | 22.5 Inches | | Seat Material | Alloy Steel | | Size | 2 in x 2 in x 11 in | | Surface Recommendation | Hard Floor | | Unit Count | 1 Count | ## Product Details - **Back Style:** Solid Back - **Brand:** DOZYANT - **Item Weight:** 1.42 Kilograms - **Material:** Alloy Steel - **Size:** 2 in x 2 in x 11 in ## Images ![DOZYANT 8" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 - Image 1](https://m.media-amazon.com/images/I/61IM5JT+7eL.jpg) ## Questions & Answers **Q: The length range is 11.2 inches to 22.5 inches and the adjustable range: 8 inches." This contradicts itself. Can you clarify the max and min length?** A: Try looking at the correct picture, you are looking at the measurement of only the shock body which is 11.2. With the shaft fully seated it's 14.5 and fully raised is 22.5, now you've got the 8''. 22.5 - 14.5 = 8 YAAAAAAAAAAAAAAAA. **Q: Does this fit the aeron chair?** A: You need to find out the diameter of the old cylinder and check against the new. It seems a pretty standard size for office chairs as far as I can see. Getting the old out and the new in can be hard work as these rely on friction and weight to sit in the base as well as connecting to the seat. There are video's on YouTube. Check Aeron cylinder replacement there and see if anyone has posted **Q: Does it come with the tool required to remove the old cylinder?** A: No, there are no tools included with the cylinder. There are instructions online for removal, the technique that I use primarily involves a 2# hammer. If the cylinder is really stuck into the bracket on the seat bottom, you may need a vise and a punch to hammer out the top of the cylinder. Step by step instructions are too long to detail here - search for a video tutorial on YouTube. **Q: Will it work on this chair to raise it higher than its default? https://www.amazon.com/gp/product/b07s57ccxf hoping so.** A: Depends on what size cylinder you are replacing. I bought this to replace a 4 inch and it was too high. I bought a 6 inch and it worked fine. No sagging even with my 250 lbs ## Customer Reviews ### ⭐⭐⭐⭐⭐ Makes my Aeron a usable height, installation can be tricky if you have an old chair *by A***L on December 27, 2024* This is a good cylinder and I love the height it adds. I viewed the installation instructions and watched some videos, but I did not have an easy time installing it because my chair was old, grimey and dusty. (The label on bottom said 2003) Tips if your chair is old like mine. 1. To get the existing cylinder out of the chair, you may need to whack it HARD. I used a 5lb sledge and a block of 2x4. Even then, it took SEVERAL hard whacks, putting all sorts of dents in the wood block. 2. Use an adjustable pipe wrench to unscrew the cylinder. The teeth on mine were leaving marks on old cylinder and it wouldn't budge. I eventually applied WD-40 at the top and that loosened it up enough to come off. There was a bunch of rust inside. 3. Once you install the new cylinder, you will have to pop off the plastic cover under the chair and adjust the set screw so it doesn't sag. After I did this, it worked perfectly. ### ⭐⭐⭐⭐⭐ Good product as the height adds comfort. The value is not just in the price but also the product. *by C***H on September 6, 2023* Take a look at this product, it is well worth the purchase. For a taller chair seat, this does the job. It was a better and more sturdy lift-tube than my old one. It put my feet, knees and hips in a more neutral position for better comfort. Less cramped = more Comfort. A word though: it is an easy install once the old one is removed. Removing the old lift-tube can be tough. ### ⭐⭐⭐⭐⭐ the right height *by I***R on January 1, 2026* worked great, finally have a computer chair at the right height for myself ## Frequently Bought Together - DOZYANT 8" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 - MySit Gas Lift Cylinder Removal Tools 28mm/1.1-Inch, Removal Tools Sets for Replace Office Chair Cylinder, Fix Sinking Office Chair Stainless Steel Chair Saver for Stop Sinking - 2 Pieces - DOZYANT 6" Long Stroke Office Chair Gas Lift Cylinder Replacement,Hydraulic Pneumatic Shock Piston Heavy Duty (450 lbs) for Tall Person Universal Size Fits Most Executive Chairs, Highest End Class 4 --- ## 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.vu/products/215223393-dozyant-8-long-stroke-office-chair-gas-lift-cylinder-replacement](https://www.desertcart.vu/products/215223393-dozyant-8-long-stroke-office-chair-gas-lift-cylinder-replacement) --- *Product available on Desertcart Vanuatu* *Store origin: VU* *Last updated: 2026-05-04*