{"product_id":"progressive-444-shocks-harley-davidson-35","title":"Progressive 444 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 444 Series shocks use patented Frequency Sensing Technology (FST) to dynamically adjust damping in real time, responding to both small bumps and large hits with appropriate oil flow for a composed ride. Hand-adjustable preload, available in standard or heavy-duty spring rates, and 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) auto-adjusts damping to bump frequency\u003c\/li\u003e\n  \u003cli\u003eDeflective disc valving for progressive rate response\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 444-4077B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 9.45 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\u003eWARNING:\u003c\/strong\u003e This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and reproductive harm. For more information, visit 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 before ordering, as shock lengths vary by chassis.\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 allows the shock to sense bump frequency and automatically adjust internal oil ports to provide the right damping — stiff for small bumps, softer for big hits — without rider input.\u003c\/p\u003e\n\u003ch3\u003eDo I need special tools to adjust preload?\u003c\/h3\u003e\n\u003cp\u003eNo. Progressive 444s feature a hand-adjustable top-mount preload cap that twists by hand — no tools required.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between standard and heavy-duty spring rates?\u003c\/h3\u003e\n\u003cp\u003eHeavy-duty rates support heavier loads and stiffer suspension tuning. Standard rates suit most riders. Choose based on your bike's load and riding preference.\u003c\/p\u003e\n\u003ch3\u003eAre these street legal?\u003c\/h3\u003e\n\u003cp\u003eYes — Progressive 444 shocks are street-legal suspension components. Check local regulations if your area has specific suspension rules.\u003c\/p\u003e\n\u003ch3\u003eWhat warranty does Progressive offer?\u003c\/h3\u003e\n\u003cp\u003eLimited Lifetime Warranty covering defects in materials and workmanship for the original owner.\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":53040159981679,"sku":"T14-669245","price":860.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_a33f355d-f3f4-4381-9488-3ececa14b689.png?v=1779566693","url":"https:\/\/vtwinbikers.com\/products\/progressive-444-shocks-harley-davidson-35","provider":"Vtwinbikers","version":"1.0","type":"link"}