{"product_id":"progressive-412-shocks-harley-davidson-4","title":"Progressive 412 Shocks — Harley-Davidson","description":"\u003cp\u003eProgressive 412 Series shocks deliver consistent damping performance on Harley-Davidson motorcycles using a doublewall steel body with nitrogen-charged, velocity-sensitive valving. The five-position preload adjuster lets you tune spring rate to match your weight and riding style, while progressive-rate springs smooth bumps throughout the suspension stroke.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eDoublewall steel damper body\u003c\/li\u003e\n  \u003cli\u003eNitrogen-charged, multi-stage velocity-sensitive valving\u003c\/li\u003e\n  \u003cli\u003eProgressive-rate springs (standard or heavy-duty)\u003c\/li\u003e\n  \u003cli\u003e5-position cam-style preload adjuster\u003c\/li\u003e\n  \u003cli\u003eAvailable in chrome or black finish\u003c\/li\u003e\n  \u003cli\u003eOptional full 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 412-4006B\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 9.5 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCalifornia Prop 65 Warning:\u003c\/strong\u003e Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson motorcycles. Verify your specific model and year before ordering, as applications vary by chassis.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eCan I adjust the preload myself?\u003c\/h3\u003e\n\u003cp\u003eYes — the 5-position cam-style preload adjuster lets you dial in spring tension without tools. Adjust to match your weight and cargo load.\u003c\/p\u003e\n\u003ch3\u003eWhat's the difference between standard and heavy-duty springs?\u003c\/h3\u003e\n\u003cp\u003eHeavy-duty springs carry higher loads and offer stiffer support for heavier riders or two-up riding with luggage. Standard springs suit lighter riders and solo cruising.\u003c\/p\u003e\n\u003ch3\u003eDo these come with chrome covers?\u003c\/h3\u003e\n\u003cp\u003eStandard 412s ship without covers. Chrome covers are available as optional accessories on select Harley models — check fitment when ordering.\u003c\/p\u003e\n\u003ch3\u003eHow do I know which spring rate to choose?\u003c\/h3\u003e\n\u003cp\u003eStart with standard springs if you're under 200 lbs solo. Heavy-duty springs are better for riders over 200 lbs or frequent two-up touring with luggage.\u003c\/p\u003e\n\u003ch3\u003eAre these a direct bolt-on replacement?\u003c\/h3\u003e\n\u003cp\u003eYes — they bolt into the factory shock mounts. No frame modifications needed. Installation typically takes 30-60 minutes per shock with basic hand tools.\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":53040146972783,"sku":"T14-613990","price":379.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_61f4c9cf-c4d1-43a6-ae01-38dcb57e9378.png?v=1779565878","url":"https:\/\/vtwinbikers.com\/products\/progressive-412-shocks-harley-davidson-4","provider":"Vtwinbikers","version":"1.0","type":"link"}