{"product_id":"progressive-412-shocks-harley-davidson-58","title":"Progressive 412 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 412 Series shocks deliver suspension tuning without the premium price tag, featuring double-wall steel construction with nitrogen-charged, multi-stage velocity-sensitive valving for smooth, consistent damping across the compression stroke. A five-position cam-style preload adjuster lets you dial in spring stiffness to match your weight and riding style.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDouble-wall steel damper body\u003c\/li\u003e\n  \u003cli\u003eNitrogen-charged for consistent performance\u003c\/li\u003e\n  \u003cli\u003eMulti-stage velocity-sensitive valving\u003c\/li\u003e\n  \u003cli\u003e5-position cam preload adjuster\u003c\/li\u003e\n  \u003cli\u003eProgressive or linear spring rate options\u003c\/li\u003e\n  \u003cli\u003eChrome or black finish available\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 412-4003C\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 10.6 lb\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 before ordering to ensure proper fitment.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan I adjust the ride height or stiffness?\u003c\/h3\u003e\n\u003cp\u003eYes — the 5-position cam preload adjuster lets you dial spring stiffness to match your weight and riding preference.\u003c\/p\u003e\n\u003ch3\u003eDo these shocks come with chrome covers?\u003c\/h3\u003e\n\u003cp\u003eShow chrome covers are optional on select models. Check your application — some come standard, others are sold separately.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between Progressive and Linear spring rate?\u003c\/h3\u003e\n\u003cp\u003eProgressive springs get stiffer as they compress, suiting varied loads. Linear springs maintain consistent stiffness throughout. Choose based on your riding style and bike setup.\u003c\/p\u003e\n\u003ch3\u003eHow long will these shocks last?\u003c\/h3\u003e\n\u003cp\u003eThe double-wall steel construction and nitrogen charge are engineered for the life of your motorcycle with proper maintenance and preload adjustment.\u003c\/p\u003e\n\u003ch3\u003eDo I need to bleed these shocks during installation?\u003c\/h3\u003e\n\u003cp\u003eNo — these are sealed nitrogen-charged shocks. Installation is straightforward bolt-on replacement on most Harley models.\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":53040155525231,"sku":"T14-669134","price":379.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_35e2c256-7572-4bea-b0d0-cf2c9589a160.png?v=1779565620","url":"https:\/\/vtwinbikers.com\/products\/progressive-412-shocks-harley-davidson-58","provider":"Vtwinbikers","version":"1.0","type":"link"}