--- product_id: 456953868 title: "14 Inches-22 Inches Extra Long Gas Lift Cylinder Replacement, 8'' Stroke, Tall Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Fit for Drafting Chairs Bar Stools, Class 4 (Polished Steel)" brand: "mastery mart" price: "65465CFA" currency: XOF in_stock: true reviews_count: 13 category: "Mastery Mart" url: https://www.desertcart.sn/products/456953868-14-inches-22-inches-extra-long-gas-lift-cylinder-replacement store_origin: SN region: Senegal --- # 8'' adjustable stroke for perfect height 360° smooth swivel rotation Class 4 heavy-duty steel, supports 1000 lbs 14 Inches-22 Inches Extra Long Gas Lift Cylinder Replacement, 8'' Stroke, Tall Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Fit for Drafting Chairs Bar Stools, Class 4 (Polished Steel) **Brand:** mastery mart **Price:** 65465CFA **Availability:** ✅ In Stock ## Summary > 🚀 Upgrade your chair, upgrade your hustle! ## Quick Answers - **What is this?** 14 Inches-22 Inches Extra Long Gas Lift Cylinder Replacement, 8'' Stroke, Tall Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Fit for Drafting Chairs Bar Stools, Class 4 (Polished Steel) by mastery mart - **How much does it cost?** 65465CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/456953868-14-inches-22-inches-extra-long-gas-lift-cylinder-replacement) ## Best For - mastery mart enthusiasts ## Why This Product - Trusted mastery mart brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Built to Endure:** Class 4 polished steel cylinder engineered to support up to 1000 lbs, ensuring durability and stability under pressure. - • **Universal Compatibility:** Fits most office chairs including premium brands like Herman Miller Aeron—measure once, upgrade forever. - • **Say Goodbye to Chair Sinking:** Heavy-duty pneumatic piston eliminates annoying sinking issues, keeping your seat steady all day long. - • **Elevate Your Workspace Comfort:** Extra-long 13-21 inch range with 8'' stroke lets you customize your chair height for optimal posture and productivity. - • **Effortless Installation & Support:** Quick swap design with 360° rotation plus dedicated customer service guarantees satisfaction or your money back. ## Overview This 13-21 inch extra-long gas lift cylinder replacement features an 8-inch adjustable stroke and is crafted from premium Class 4 polished steel alloy. Designed for universal fit with most office chairs including high-end models, it supports up to 1000 lbs and offers smooth 360-degree swivel rotation. Engineered to eliminate sinking issues, it’s the heavy-duty upgrade your workspace deserves. ## Description Mastery Mart We enhance office life with solutions for comfort and efficiency, driven by continuous innovation and excellence. The creation was driven by the need to address common issues in the market such as lack of comfort, non-ergonomic designs, and non-durable materials. We are committed to introducing innovative designs and high-quality materials to ensure optimal seating and user experience. Enjoy shopping! Are our products good quality? Absolutely! We never compromise on quality. Stringent quality control and the finest materials ensure our products exceed expectations, last long, and provide unbeatable value. How did we get our start? Our story began in a modest garage, fueled by a dream to create top-notch products that enhance lives. Through hard work and unwavering passion, we've grown but stay true to our roots. What makes our products unique? We obsess over every detail to craft something truly exceptional. Our innovative designs and premium materials culminate in products that stand apart. Are our products good quality? Absolutely! We never compromise on quality. Stringent quality control and the finest materials ensure our products exceed expectations, last long, and provide unbeatable value. How did we get our start? Our story began in a modest garage, fueled by a dream to create top-notch products that enhance lives. Through hard work and unwavering passion, we've grown but stay true to our roots. What makes our products unique? We obsess over every detail to craft something truly exceptional. Our innovative designs and premium materials culminate in products that stand apart. Review: Hydraulic cylinder - Works fantastic, The fit was perfect. Easy to install Review: Desk chair modification - Cylinder fit perfect to existing desk chair. Modified to use with drafting table with addition of purchased foot rest. New chair works great as desk chair or drafting chair. ## Features - 🏆【Adjustable Height 8 inches】The compressed length is 13.97 inches (355mm), the fully expanded length is 21.85 inches (555mm), travel length is 8 inches, which allows your chairs to rise higher. (Note: Please measure the length of the outer cylinder before purchase). - 🏆【Universal Fit Size for Most Chairs】The outer column cylinder diameter connected to the base is 2 inches (50mm), and the piston shaft diameter connected to the chair is 1-1/8" (28mm). This pneumatic piston cylinder will fit almost every office chair on the market including Herman Miller Aeron. Please confirm these measurements before making a purchase. Not compatible with 1KEA and some other brands. - 🏆【Upgraded Class 4 Gas Cylinder】Mastery Mart's office chair cylinder replacement is made of premium steel. This heavy-duty gas lift cylinder is manufactured to meet the highest industry standard (BIFMA/ANSI). The pneumatic lift replacement supports up to 1000 lbs. - 🏆【Eliminate Sinking Concerns】Prevent sinking issues by removing the old cylinder using a hammer or wrench. Simply assemble our new cylinder into the base and attach the seat. Our office chair lift provides seamless 360-degree rotation. - 🏆【100% Satisfaction Guaranteed】For any issues with using our chair shock replacement, please don't hesitate to contact us. We are here to provide guidance, offer replacements, or process refunds, depending on your specific case. Your satisfaction is our priority. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B099R8JHWK | | Age Range Description | Adult | | Arm Style | Armless | | Assembly Instructions Description | Assembly required, follow provided instructions. | | Back Style | Mid Back | | Best Sellers Rank | #7,114 in Office Products ( See Top 100 in Office Products ) #196 in Office Furniture Accessories | | Brand | MASTERY MART | | Brand Name | MASTERY MART | | Color | Polished Steel | | Customer Reviews | 4.5 out of 5 stars 2,951 Reviews | | Frame Material | Alloy Steel | | Frame Material Type | Alloy Steel | | Furniture Base Movement | Swivel | | Included Components | No components included | | Indoor Outdoor Usage | Indoor | | Item Depth | 5.5 centimeters | | Item Dimensions | 14.96 x 2.17 x 2.17 inches | | Leg Style | wheels | | Manufacturer | Mastery Mart Co., Limited | | Manufacturer Part Number | MM-REP-GL05 | | Material | Alloy Steel | | Material Type | Alloy Steel | | Maximum Weight Recommendation | 1000 Pounds | | Model Number | GAS-LIFT-GL | | Pattern | Solid | | Reclining Position Count | 1 | | Required Assembly | Yes | | Room Type | Office | | Seat Material | Fabric | | Size | 8'' Travel Length | | Style Name | Solid | | Unit Count | 1.0 Count | ## Product Details - **Back Style:** Mid Back - **Brand:** MASTERY MART - **Color:** Polished Steel - **Material:** Alloy Steel - **Size:** 8'' Travel Length ## Images ![14 Inches-22 Inches Extra Long Gas Lift Cylinder Replacement, 8'' Stroke, Tall Hydraulic Pneumatic Shock Piston, Heavy Duty, Universal Fit for Drafting Chairs Bar Stools, Class 4 (Polished Steel) - Image 1](https://m.media-amazon.com/images/I/61G8xfqpQzL.jpg) ## Available Options This product comes in different **Color, Size** options. ## Questions & Answers **Q: How durable is this gas lift?** A: The office chair cylinder is made from high-strength alloy steel, high-quality thickened outer steel, high safety and explosion-proof. The gas lift cylinder has passed SGS official test and BIFMA certification, highest safety Class 4. **Q: Will this chair cyinder fit on the herman miller aeron office chair?** A: Yes, our cylinder measures 1-1/8” (28mm) at the top, where it fits into the chair seat, shaft diameter 2” (50mm) at the bottom, where it fits into the chair base, you can measure your original cylinder before ordering. **Q: What are the measurements of the cylinder, shortest and longest height as well as overall length and width?** A: Top of the cylinder: 1-1/8”, Shaft diameter：2”, Shortest and longest height for 4“ stroke ( 9.88 Inches -13.6 Inches ); 4.5“ stroke ( 10.7 Inches -15.2 Inches ); 5.5“ stroke ( 11.7 Inches -17.2 Inches ); 8“ stroke ( 14 Inches -21.8 Inches ). **Q: Will this chair cyinder work for 1KEA office chair?** A: No. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Hydraulic cylinder *by S***1 on April 20, 2026* Works fantastic, The fit was perfect. Easy to install ### ⭐⭐⭐⭐⭐ Desk chair modification *by W***E on May 27, 2026* Cylinder fit perfect to existing desk chair. Modified to use with drafting table with addition of purchased foot rest. New chair works great as desk chair or drafting chair. ### ⭐⭐⭐⭐⭐ Helped Avoid Cost of A New Chair - FIXED! *by A***E on November 15, 2025* My office chair turned out to be a disappointment after the backrest wouldn't stay up due to the plastic turn knob not staying tight no matter what I did. Then when my chair started to lose its lift on a regular basis I thought I would have to buy a new chair. I would sit down at my desk and realize I was sitting at the same height as a child does. Sad, because my previous chair lasted about 18 years. When I discovered this gas lift cylinder replacement I thought it would be worth a try to mitigate the expense of a new chair. I took the measurements from my chair in regards to how far it lifted from where it bottomed out to where it extended to and determined the 4.5" stroke height was the one I needed. I didn't know what "stroke height" was but I figured it out. Once I received it, I needed to remove the old cylinder, which was the HARDEST part of the task. I removed one end with a few hardy smacks with a hammer as illustrated on YouTube. Additionally, after unsuccessfully removing the other end with a pipe wrench as instructed, I had to disassemble the chair's mechanism to dislodge the end of it that was completely stuck in the chair pan. It took some creativity to get it done, but after about an hour of trial and error I got the old one out. At that point installing this new cylinder was SUPER easy. It fit exactly like it was supposed to. The chair is fixed! And I even fixed the other problem of the backrest not staying in position after seeing a fix on YouTube while looking at videos for installing a new chair cylinder. Now my chair is actually better than it was to begin with. The chair is stable and raises and lowers well. I look forward to an uplifting experience from this point forward (pun intended). I would recommend this fix to anyone who wants to save $150-$200+ on a new chair. --- ## 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.sn/products/456953868-14-inches-22-inches-extra-long-gas-lift-cylinder-replacement](https://www.desertcart.sn/products/456953868-14-inches-22-inches-extra-long-gas-lift-cylinder-replacement) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-21*