{"product_id":"hosali-heavy-duty-office-chair-gas-lift-universal-fit","title":"Office Chair Cylinder Replacement - Heavy-Duty Class 4 Gas Lift","description":"\u003cp\u003eIn this review of the Office Chair Cylinder Replacement, the bottom line is simple: this part is for anyone who wants to fix a sinking office or gaming chair without buying a new seat. It replaces the gas lift piston and restores height adjustment while supporting heavier users; the biggest reason to buy is the durable Class 4 construction, which promises long life and a safe anti-explosion design that passed extended cycle testing. Installation is straightforward and the universal sizing fits most bases so this repair is an easy, cost-saving upgrade.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUniversal size:\u003c\/strong\u003e Fits bases with a 50mm centre hole so it will work on most office, task, executive and salon chairs without special adapters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeavy-duty Class 4 piston:\u003c\/strong\u003e Built from thick solid steel with QPQ surface treatment to provide durable, long-lasting lift performance for heavier users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety decompression design:\u003c\/strong\u003e Anti-explosion construction and BIFMA-level cycle testing add an extra layer of security for daily use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5.5in piston stroke:\u003c\/strong\u003e Extends from 285mm to 425mm (about 11.22 to 16.7in) so you regain a useful range of seat heights for different desks or users.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple installation:\u003c\/strong\u003e Ships with gloves and installs in minutes, usually with a rubber mallet to remove the old cylinder and press the new one into the base.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCost effective repair:\u003c\/strong\u003e Replacing the cylinder saves the cost of a full chair replacement while restoring full function.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWho It's For\u003c\/h2\u003e\u003cp\u003eThis replacement cylinder is best for homeowners, office managers, and gamers who have a chair that is otherwise in good condition but is sinking or will not hold height. It is particularly useful for heavier users or taller people who need the extended stroke and robust steel construction.\u003c\/p\u003e\u003cp\u003eIt is not intended for chairs with non-standard base fittings or proprietary pistons that fall outside the 50mm centre hole size; those users should measure their old cylinder before buying or look for model-specific replacements.\u003c\/p\u003e\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eDurable Class 4 build that handled extensive cycle testing and supports heavier loads.\u003c\/li\u003e\n\u003cli\u003eUniversal 50mm fit that covers the vast majority of office and salon chairs.\u003c\/li\u003e\n\u003cli\u003eAffordable way to restore a chair instead of paying for a new one.\u003c\/li\u003e\n\u003cli\u003eEasy, mostly tool-free installation with clear steps and included gloves.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eRequires measuring the original cylinder first since it only fits standard 50mm centre hole bases.\u003c\/li\u003e\n\u003cli\u003eRemoval of the old cylinder may need a rubber mallet or basic tools, which could be awkward for some users.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eHOSALI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eUniversal 50mm centre hole\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePiston class\u003c\/td\u003e\n\u003ctd\u003eClass 4 hydraulic pneumatic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStroke\u003c\/td\u003e\n\u003ctd\u003e285mm to 425mm (11.22 to 16.7in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax supporting structure\u003c\/td\u003e\n\u003ctd\u003eHigh-strength solid steel (rated for heavy duty use)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety\u003c\/td\u003e\n\u003ctd\u003eAnti-explosion decompression design, BIFMA-level cycle test\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncludes\u003c\/td\u003e\n\u003ctd\u003eCylinder and gloves\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch2\u003eOur Verdict\u003c\/h2\u003e\u003cp\u003eThe HOSALI Office Chair Cylinder Replacement is a practical, cost-saving fix for most sinking chairs; its Class 4 construction and safety design make it a good choice for heavier or taller users who need reliable height adjustment. If your chair uses the standard 50mm fitting, this replacement restores function quickly and is better value than buying a new chair.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eWill this fit my office chair?\u003c\/strong\u003e\u003cbr\u003eIt fits chairs with a standard 50mm centre hole; measure the base opening on your existing cylinder to confirm compatibility.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow hard is installation?\u003c\/strong\u003e\u003cbr\u003eInstallation is simple and usually requires only a rubber mallet to remove the old cylinder; the package includes gloves and no extra screws are needed.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eIs it safe for heavier users?\u003c\/strong\u003e\u003cbr\u003eYes, the Class 4 piston and anti-explosion design are made for heavy-duty use and passed extended cycle testing for durability.\u003c\/p\u003e","brand":"HOSALI","offers":[{"title":"Default Title","offer_id":46752373407963,"sku":"B09CYPBZJF","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61eToYAEpKL._AC_SL1500.jpg?v=1747916129","url":"https:\/\/gearmusthave.com\/products\/hosali-heavy-duty-office-chair-gas-lift-universal-fit","provider":"GearMustHave","version":"1.0","type":"link"}