{"product_id":"progressive-444-shocks-harley-davidson-20","title":"Progressive 444 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 444 Series shocks for Harley-Davidson use Frequency Sensing Technology (FST) to dynamically adjust damping in real time, responding to small bumps and large impacts with automatic oil distribution for a smooth, controlled ride. Hand-adjustable preload, made in the USA with a Limited Lifetime Warranty.\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 progressive damping curve\u003c\/li\u003e\n  \u003cli\u003eHand-adjustable spring preload — no special tools required\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 with Limited 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 444-4021C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Suspension \/ Shocks and Struts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 8.85 lb per shock\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWARNING:\u003c\/strong\u003e Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson models. Confirm your specific year and model compatibility before ordering.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWhat is Frequency Sensing Technology and how does it work?\u003c\/h3\u003e\n\u003cp\u003eFST senses bump frequency and automatically adjusts internal oil ports to match the impact — small bumps get softer damping, big hits get firmer response.\u003c\/p\u003e\n\u003ch3\u003eCan I adjust the preload myself, or do I need a shop?\u003c\/h3\u003e\n\u003cp\u003eHand-adjustable preload — simply twist the top cap to fine-tune spring tension without tools.\u003c\/p\u003e\n\u003ch3\u003eAre these shocks made in the USA?\u003c\/h3\u003e\n\u003cp\u003eYes. Progressive 444 Series shocks are manufactured in the USA.\u003c\/p\u003e\n\u003ch3\u003eWhat warranty do these carry?\u003c\/h3\u003e\n\u003cp\u003eLimited Lifetime Warranty covers defects in materials and workmanship.\u003c\/p\u003e\n\u003ch3\u003eDo I need to install both shocks at the same time?\u003c\/h3\u003e\n\u003cp\u003eFor best handling balance, install them as a pair. If replacing one, ensure both are set to the same preload.\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":53040159228015,"sku":"T14-669227","price":860.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_b1e66b94-929d-4c2e-9af4-b0514dfc79d6.png?v=1779565721","url":"https:\/\/vtwinbikers.com\/products\/progressive-444-shocks-harley-davidson-20","provider":"Vtwinbikers","version":"1.0","type":"link"}