{"product_id":"progressive-412-shocks-harley-davidson-57","title":"Progressive 412 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 412 Series shocks deliver suspension tuning at an accessible price point with a doublewall steel body, nitrogen-charged damping, and a five-position preload adjuster to match any rider weight. Engineered for smooth, consistent performance across Harley-Davidson applications.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDoublewall steel construction\u003c\/li\u003e\n  \u003cli\u003eNitrogen-charged, multi-stage velocity-sensitive damping\u003c\/li\u003e\n  \u003cli\u003e5-position cam-style preload adjuster\u003c\/li\u003e\n  \u003cli\u003eProgressive-rate springs available in standard or heavy-duty\u003c\/li\u003e\n  \u003cli\u003eChrome or black finish options\u003c\/li\u003e\n  \u003cli\u003eShow Chrome covers available 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 412-4003B\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 10 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Suspension \/ Shocks and Struts\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalifornia Prop 65 Warning:\u003c\/strong\u003e Yes — contains materials known to cause cancer and reproductive harm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson models. Verify your specific year and model compatibility before ordering, as suspension fitment varies by chassis generation.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan I adjust the preload on the fly?\u003c\/h3\u003e\n\u003cp\u003eYes — the 5-position cam-style preload adjuster lets you tune ride height and stiffness without tools. Rotate the cam to match your weight and load.\u003c\/p\u003e\n\u003ch3\u003eDo these come with Show Chrome covers?\u003c\/h3\u003e\n\u003cp\u003eShow Chrome covers are optional on select applications. Check the product listing for your specific model to see if covers are included or available separately.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between standard and heavy-duty springs?\u003c\/h3\u003e\n\u003cp\u003eStandard springs suit lighter riders and stock bike weight. Heavy-duty springs provide firmer support for heavier riders or loaded touring.\u003c\/p\u003e\n\u003ch3\u003eWill these work on my specific Harley model?\u003c\/h3\u003e\n\u003cp\u003eProgressive 412s fit multiple Harley platforms, but fitment varies by year and chassis. Confirm your model year and type before ordering.\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":53040155459695,"sku":"T14-669133","price":379.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_8aa58cbd-2d3d-4b2a-a9a7-533f37f7ddec.png?v=1779565667","url":"https:\/\/vtwinbikers.com\/products\/progressive-412-shocks-harley-davidson-57","provider":"Vtwinbikers","version":"1.0","type":"link"}