{"product_id":"progressive-412-shocks-harley-davidson-69","title":"Progressive 412 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 412 Series shocks deliver durable, adjustable suspension for Harley-Davidson with a proven design that improves ride quality across a wide range of rider weights. Double-wall steel bodies house nitrogen-charged, multi-stage velocity-sensitive damping that maintains consistent performance mile after mile.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-wall steel damper construction\u003c\/li\u003e\n  \u003cli\u003eHigh-pressure nitrogen charging\u003c\/li\u003e\n  \u003cli\u003eMulti-stage velocity-sensitive damping valve\u003c\/li\u003e\n  \u003cli\u003e5-position cam-style preload adjuster\u003c\/li\u003e\n  \u003cli\u003eAvailable in standard or heavy-duty progressive rate springs\u003c\/li\u003e\n  \u003cli\u003eChrome or black finish options\u003c\/li\u003e\n  \u003cli\u003eOptional Show Chrome covers on select models\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 412-4021B\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 9.6 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalifornia Prop 65 Warning:\u003c\/strong\u003e Yes — see www.P65Warnings.ca.gov for details\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson models. Verify your specific model year and application before ordering, as shock length and mounting style vary.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan I adjust these shocks after installation?\u003c\/h3\u003e\n\u003cp\u003eYes. The 5-position cam-style preload adjuster lets you dial in spring stiffness to match your weight and riding style without tools.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between standard and heavy-duty springs?\u003c\/h3\u003e\n\u003cp\u003eHeavy-duty springs support heavier riders or carrying loads. Standard springs work best for lighter riders. Choose based on your weight and typical luggage load.\u003c\/p\u003e\n\u003ch3\u003eDo these come with chrome covers?\u003c\/h3\u003e\n\u003cp\u003eStandard models ship without covers. Show Chrome covers are optional on select applications — check your fitment details.\u003c\/p\u003e\n\u003ch3\u003eWhy nitrogen charge the shocks?\u003c\/h3\u003e\n\u003cp\u003eNitrogen prevents damping fluid from foaming under hard compression, keeping damping consistent and preventing shock fade during long rides.\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":53040156409967,"sku":"T14-669145","price":379.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_f187509d-82e8-423e-8785-14789205e52e.png?v=1779565635","url":"https:\/\/vtwinbikers.com\/products\/progressive-412-shocks-harley-davidson-69","provider":"Vtwinbikers","version":"1.0","type":"link"}