--- product_id: 207966104 title: "chair gas cylinder" brand: "mastery mart" price: "€ 69.74" currency: EUR in_stock: true reviews_count: 13 category: "Mastery Mart" url: https://www.desertcart.hr/products/207966104-chair-gas-cylinder store_origin: HR region: Croatia --- # 4-inch adjustable stroke Fits most office chairs Class 4 heavy-duty steel chair gas cylinder **Brand:** mastery mart **Price:** € 69.74 **Availability:** ✅ In Stock ## Summary > 🪑 Upgrade your throne — sit taller, work smarter! ## Quick Answers - **What is this?** chair gas cylinder by mastery mart - **How much does it cost?** € 69.74 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/207966104-chair-gas-cylinder) ## 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:** Premium Class 4 steel supports up to 1000 lbs without compromise. - • **Effortless Installation:** Quick swap replacement with seamless 360° swivel functionality. - • **Universal Compatibility:** Designed to fit most office chairs including Herman Miller Aeron (except 1KEA). - • **Confidence in Every Seat:** Backed by a satisfaction guarantee for worry-free upgrades. - • **Elevate Your Workspace Comfort:** Smooth 4-inch height adjustment for personalized seating. ## Overview The MASTERY MART Gas Lift Cylinder offers a robust 4-inch adjustable height range, crafted from premium Class 4 alloy steel to support up to 1000 lbs. Engineered for universal fitment with most office chairs including Herman Miller Aeron, this heavy-duty pneumatic piston ensures smooth, reliable height adjustment and 360-degree swivel. Easy to install and backed by a satisfaction guarantee, it’s the ultimate upgrade for professionals seeking ergonomic excellence and durability. ## Description Product Description aplus content video Will this chair cyinder fit on the herman miller aeron office chair? 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. Will this chair cyinder fit on the herman miller aeron office chair? 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. What are the measurements of the cylinder, shortest and longest height as well as overall length and width? Top of the cylinder: 1-1/8”, Shaft diameter：2”, Shortest and longest height for 4“ stroke ( 9.88 Inches -13.6 Inches ); 5.5“ stroke ( 11.7 Inches -17.2 Inches ); 8“ stroke ( 14 Inches -21.8 Inches ). What are the measurements of the cylinder, shortest and longest height as well as overall length and width? Top of the cylinder: 1-1/8”, Shaft diameter：2”, Shortest and longest height for 4“ stroke ( 9.88 Inches -13.6 Inches ); 5.5“ stroke ( 11.7 Inches -17.2 Inches ); 8“ stroke ( 14 Inches -21.8 Inches ). Will this chair cyinder work for 1KEA office chair? No. Will this chair cyinder work for 1KEA office chair? No. Mastery Mart Gas Cylinder for Office Chair Office Chair Cylinder 4" Chair Cylinder 5.5" Office Chair Cylinder 8" Review: Perfect for Vertagear gaming chairs. - Bought this to replace the piston in my aging Vertagear gaming chair. Perfect replacement. Gives the same lowest level with an extra 1inch/2.5cm of height. Easy to fit, well packaged and seems to work really well. Only time will tell on its longevity. TOP TIP: Be aware that there are varying low and height differences so be sure to measure your existing pistons lowest, highest, overall length and travel length. It's also a good idea to check the taper at the bottom of your existing pistons as not all pistons are equal in this area. This one sticks through the bottom quite a bit so if your wheel base is low to the ground it will probably hit the floor before the wheels. In that case go for one with less of a taper so not so much of the piston sticks out the bottom of your wheel base. Review: Perfect fit for Noble Chairs Hero 👍 - Perfect replacement for Noble Chairs Hero gas lift. Relatively easy fit - I removed the whole tilt adjustment mechanism, gas lift and floor spider from the chair by removing the 4 x 6mm Allen key bolts, then removed the spider by clouting the end of the gas lift with a reasonably heavy hammer while holding on to the spider. Removal from the rest of the mechanism was easy enough with the aid of a bench vice clamped around the stem of the old gas lift and a bit of a twist of the top assembly. Reassembly was very straightforward and the chair (which is super comfortable) is now back at its proper height. No view on longevity of the replacement so far but the replacement was quick and painless and even if I have to do it every couple of years, it’ll be ok. ## Features - 🏆【Adjustable Height 4 inches】The compressed length is 9.88 inches (251mm), the fully expanded length is 13.62 inches (346mm), stroke length is 4 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 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 lift has a maximum capacity of 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 | B0859WG3X8 | | Age Range Description | Adult | | Arm Style | Armless | | Assembly Instructions Description | Assembly required. Follow the instructions provided. | | Back Style | Mid Back | | Best Sellers Rank | 29,388 in Home & Kitchen ( See Top 100 in Home & Kitchen ) 202 in Furniture Accessories | | Brand | MASTERY MART | | Brand Name | MASTERY MART | | Colour | Matte Black | | Country Of Origin | China | | Customer Reviews | 4.6 out of 5 stars 2,475 Reviews | | Fabric Type | No | | Form Factor | swiveling | | Frame Material Type | Metal | | Furniture Base Movement | Swivel | | Included Components | gas lift cylinder | | Indoor Outdoor Usage | Indoor | | Is Assembly Required? | No | | Is Customizable? | No | | Is Extendable | No | | Is Foldable | No | | Item Depth | 2 inches | | Item Dimensions | 25 x 5 x 5 centimetres | | Item Dimensions D x W x H | 25D x 5W x 5H centimetres | | Item Shape | Cylindrical | | Item Weight | 0.8 Kilograms | | Item weight | 0.8 Kilograms | | Leg Style | Straight Leg | | Manufacturer | Mastery Mart Co., Limited | | Manufacturer Part Number | MF-PT001 | | Material | Alloy Steel | | Material Type | Alloy Steel | | Maximum Weight Recommendation | 453.59 kg | | Model Name | Office Chair Gas Cylinder | | Model Number | GAS-LIFT-GL | | Number of Items | 1 | | Number of Packs | 1 | | Pattern | Solid | | Product Care Instructions | Wipe Clean | | Product dimensions | 25D x 5W x 5H centimetres | | Reclining Position Count | 1 | | Recommended Uses For Product | Office | | Room Type | Office | | Seat Depth | 24.9 centimetres | | Seat Material Type | Fabric | | Size | 9-13 Inches, 4'' Travel Length | | Sleeping Bag Filling Material | Foam | | Special Features | Adjustable Height | | Style Name | Solid | ## Product Details - **Brand:** MASTERY MART - **Colour:** Matte Black - **Material:** Alloy Steel - **Product dimensions:** 25D x 5W x 5H centimetres - **Size:** 4'' Travel Length ## Images ![chair gas cylinder - Image 1](https://m.media-amazon.com/images/I/51vgc3GW7CL.jpg) ![chair gas cylinder - Image 2](https://m.media-amazon.com/images/I/71BGO-k6POL.jpg) ![chair gas cylinder - Image 3](https://m.media-amazon.com/images/I/712jX+y1pFL.jpg) ![chair gas cylinder - Image 4](https://m.media-amazon.com/images/I/71255OW7a4L.jpg) ![chair gas cylinder - Image 5](https://m.media-amazon.com/images/I/81SCT4Z-F7L.jpg) ## Questions & Answers **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 ); 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 ### ⭐⭐⭐⭐⭐ Perfect for Vertagear gaming chairs. *by K***N on 2 December 2025* Bought this to replace the piston in my aging Vertagear gaming chair. Perfect replacement. Gives the same lowest level with an extra 1inch/2.5cm of height. Easy to fit, well packaged and seems to work really well. Only time will tell on its longevity. TOP TIP: Be aware that there are varying low and height differences so be sure to measure your existing pistons lowest, highest, overall length and travel length. It's also a good idea to check the taper at the bottom of your existing pistons as not all pistons are equal in this area. This one sticks through the bottom quite a bit so if your wheel base is low to the ground it will probably hit the floor before the wheels. In that case go for one with less of a taper so not so much of the piston sticks out the bottom of your wheel base. ### ⭐⭐⭐⭐⭐ Perfect fit for Noble Chairs Hero 👍 *by M***R on 16 July 2026* Perfect replacement for Noble Chairs Hero gas lift. Relatively easy fit - I removed the whole tilt adjustment mechanism, gas lift and floor spider from the chair by removing the 4 x 6mm Allen key bolts, then removed the spider by clouting the end of the gas lift with a reasonably heavy hammer while holding on to the spider. Removal from the rest of the mechanism was easy enough with the aid of a bench vice clamped around the stem of the old gas lift and a bit of a twist of the top assembly. Reassembly was very straightforward and the chair (which is super comfortable) is now back at its proper height. No view on longevity of the replacement so far but the replacement was quick and painless and even if I have to do it every couple of years, it’ll be ok. ### ⭐⭐⭐⭐⭐ Good fit, stays up all night now! *by K***R on 21 January 2022* My 5 year old (but still very comfy) office chair had developed a tendency to lower itself at random, often in the middle of Zoom meetings. Having measured my existing cylinder, I ordered the required length and grith. This one seems to be a common size. It arrived next day, so I set aside a spare 15 minutes to fit it. It's just a tight push fit, but I had to get the old one off, so with my feet firmly on the base, and my hands clamped to the underside of the seat, I lay on my decking on my back, under the chair attempting to pull the two pieces apart. Lots of grunting ensued, but to no avail, although my neighbour wondered why I has having relations with a chair. Next came the lump hammer. A block of wood under the seat, and a well aimed clout with the hammer, and I had a sore thumb. My car jack was next, carefully placed on a block of wood. This separated the cylinder from the base! All I had to do now was pull it out from under the seat. Much more grunting and cursing later, and most of a can of WD40, I resorted to watching a YouTube video, which suggested using a pipe wrench. The young lady that was demonstrating it had no problem twisting the cylinder out, but I must be a bit weaker, as I had no luck, and had to hit the pipe wrench with a hammer. This worked! The new cylinder was a perfect fit, took seconds to put in place, and works perfectly. It stays up all night now and I have no worries about my nose and mouth slowly disapearing from sight in the middle of an important zoom call with my MD. Money well spent in my opinion. In short, if you can get the old one out, this one does the job perfectly! ## Frequently Bought Together - 9 Inches to 13 Inches Office Chair Cylinder Replacement, 4" Stroke, Heavy Duty 1000lbs, Hydraulic Pneumatic Shock Piston, Universal Gas Cylinder Fit for Most Office Chairs, Class 4, Black - Besitu 500Lbs Office Chair Replacement Parts, w/ 6'' x 10.2" Mounting Holes Chair Base Heavy Duty Plate Swivel Tilt Control Seat Mechanism for Executive and Gaming Chairs - MASTERY MART 28" Heavy Duty Office Chair Base Replacement Parts, 2500 Lbs, Desk Chair Reinforced Metal Leg with Universal Gas Cylinder Hole and Casters Sockets, Matte Black --- ## 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.hr/products/207966104-chair-gas-cylinder](https://www.desertcart.hr/products/207966104-chair-gas-cylinder) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-08-13*