{"product_id":"progressive-444-shocks-harley-davidson-18","title":"Progressive 444 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 444 Series shocks for Harley-Davidson use proprietary Frequency Sensing Technology (FST) to dynamically adjust damping on the fly, responding to small bumps and large hits with automatic oil flow compensation. Hand-adjustable spring preload and available in standard or heavy-duty rates with black or chrome finish.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eFrequency Sensing Technology (FST) automatically adjusts damping based on bump frequency\u003c\/li\u003e\n  \u003cli\u003eDeflective disc valving for consistent feel across speeds\u003c\/li\u003e\n  \u003cli\u003eProgressive rate spring\u003c\/li\u003e\n  \u003cli\u003eHand-adjustable spring preload — no special tools needed\u003c\/li\u003e\n  \u003cli\u003eAvailable in standard or heavy-duty spring rates\u003c\/li\u003e\n  \u003cli\u003eBlack or chrome finish options\u003c\/li\u003e\n  \u003cli\u003eMade in USA\u003c\/li\u003e\n  \u003cli\u003eLimited Lifetime Warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Progressive\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 444-4001C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 8.5 lb per shock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Suspension \/ Shocks and Struts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWarranty:\u003c\/strong\u003e Limited Lifetime Warranty\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e USA\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalifornia Prop 65:\u003c\/strong\u003e Cancer and Reproductive Harm — www.P65Warnings.ca.gov\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson models. Verify application with Progressive's fitment chart or contact tech support for your specific year and model.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is Frequency Sensing Technology (FST)?\u003c\/h3\u003e\n\u003cp\u003eFST senses bump frequency and automatically adjusts internal damping oil flow to absorb both small road chatter and large impacts without manual adjustment.\u003c\/p\u003e\n\u003ch3\u003eCan I adjust the spring preload myself?\u003c\/h3\u003e\n\u003cp\u003eYes — the top-mount threaded adjuster lets you fine-tune preload by hand with no special tools needed.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between standard and heavy-duty spring rates?\u003c\/h3\u003e\n\u003cp\u003eStandard rate works for solo riders and stock weight; heavy-duty is for riders who carry passengers, luggage, or heavier body weight.\u003c\/p\u003e\n\u003ch3\u003eAre these shocks made in the USA?\u003c\/h3\u003e\n\u003cp\u003eYes, Progressive 444 shocks are manufactured in the USA.\u003c\/p\u003e\n\u003ch3\u003eDo I need a special tool to install these?\u003c\/h3\u003e\n\u003cp\u003eInstallation typically requires basic tools and knowledge of shock removal\/installation. Consult the manual or a qualified mechanic if unsure.\u003c\/p\u003e\n\u003ch2\u003eCalifornia Proposition 65 Warning\u003c\/h2\u003e\n\u003cp style=\"font-size:11px;color:#888;\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov\u003c\/p\u003e","brand":"Progressive","offers":[{"title":"Default Title","offer_id":53040159162479,"sku":"T14-669223","price":860.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_eeded2c2-8515-499f-909c-8c9866305857.png?v=1779566663","url":"https:\/\/vtwinbikers.com\/products\/progressive-444-shocks-harley-davidson-18","provider":"Vtwinbikers","version":"1.0","type":"link"}