{"product_id":"progressive-fork-cartridge-kits-harley-davidson-1","title":"Progressive Fork Cartridge Kit - Harley-Davidson","description":"\u003c!-- vt:seo-start --\u003e\n\u003cdiv class=\"vt-brand-bio\" style=\"background:#f6f6f6;border-left:4px solid #c8102e;padding:14px 18px;margin:0 0 20px;border-radius:4px;\"\u003e\n\u003ch2 style=\"margin:0 0 6px;font-size:1.05em;\"\u003eAbout Progressive\u003c\/h2\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.6;\"\u003eProgressive Suspension has focused exclusively on American V-twin suspension since 1982, and its Monotube fork cartridges and 400\/970\/970G shock series are among the most common upgrades on baggers and Softails. For most riders the stock rear shock is the single worst part on the bike — this is the fix.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"line-height:1.65;\"\u003eThis Progressive Suspension fork cartridge kit is engineered to transform your Harley-Davidson's front end performance. It replaces the factory fork internals with advanced gas-charged monotube damper cartridges and custom-tuned springs. The result is a significant improvement in ride dynamics, offering better stability and control.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eWhy riders pick this\u003c\/h3\u003e\u003cul style=\"padding-left:20px;margin:0 0 16px;\"\u003e\n\u003cli style=\"margin:3px 0;\"\u003eReplaces OEM fork internals with advanced cartridges\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eReduces front-end brake dive for better control\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eImproves stability and confidence in corners\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eCustom-tuned springs for optimal damping\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eAvailable in stock and lowered ride heights\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFactory Harley-Davidson forks can often feel undersprung or underdamped, especially when pushed hard. This Progressive fork cartridge kit addresses those shortcomings by providing a complete overhaul of your front suspension. Riders will immediately notice reduced front-end brake dive during heavy braking and a more planted feel through corners, inspiring greater confidence on every ride.\u003c\/p\u003e\u003ch3\u003eSuperior Front-End Control\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFeatures gas-charged monotube damper cartridges\u003c\/li\u003e\n\u003cli\u003eIncludes custom-tuned fork springs for optimal performance\u003c\/li\u003e\n\u003cli\u003eSignificantly reduces front-end brake dive\u003c\/li\u003e\n\u003cli\u003eEnhances cornering stability and control\u003c\/li\u003e\n\u003cli\u003eImproves resistance to bottoming out\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eDial In Your Ride Height\u003c\/h3\u003e\u003cp\u003eBeyond performance, this kit offers versatility in setting up your bike. With options for both stock and lowered ride-height versions, you can tailor your Harley-Davidson's stance to your preference or riding style. Whether you're looking to maintain factory geometry or achieve a more aggressive, lowered look, these cartridge kits provide the flexibility to get your front end dialed in just right.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eSpecifications\u003c\/h3\u003e\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 31-4004\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Suspension \/ Fork Cartridge Kits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 9.7 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\u003ch3 style=\"margin:22px 0 8px;\"\u003eCommon questions\u003c\/h3\u003e\u003cdiv class=\"vt-faq\"\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWill this kit reduce brake dive under hard braking?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, the gas-charged monotube design of these cartridges is specifically engineered to resist compression during hard braking, keeping the front end more stable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eDoes this kit offer different ride height options?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, this Progressive fork cartridge kit is available with options for both stock and lowered ride heights to suit your preference.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eIs this a universal kit for all Harley-Davidson models?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eWhile designed for Harley-Davidson, specific fitment varies by model and year. Always verify compatibility for your exact bike before ordering.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vt-confidence\" style=\"border-top:1px solid #e5e5e5;margin:24px 0 0;padding:16px 0 0;font-size:0.92em;line-height:1.6;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOrdering from Vtwinbikers\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli\u003eBrand new, sourced through authorized US distribution — never used, never grey-market.\u003c\/li\u003e\n\u003cli\u003eNot sure it fits? Use \u003cstrong\u003eShop by Bike\u003c\/strong\u003e to filter by your year and model, or email us and we will confirm before you order.\u003c\/li\u003e\n\u003cli\u003eHarley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vtwinbikers.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Fork Cartridge Kits\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/all\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Progressive\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/progressive\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Progressive Fork Cartridge Kit - Harley-Davidson\",\"item\":\"https:\/\/vtwinbikers.com\/products\/progressive-fork-cartridge-kits-harley-davidson-1\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this kit reduce brake dive under hard braking?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, the gas-charged monotube design of these cartridges is specifically engineered to resist compression during hard braking, keeping the front end more stable.\"}},{\"@type\":\"Question\",\"name\":\"Does this kit offer different ride height options?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, this Progressive fork cartridge kit is available with options for both stock and lowered ride heights to suit your preference.\"}},{\"@type\":\"Question\",\"name\":\"Is this a universal kit for all Harley-Davidson models?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"While designed for Harley-Davidson, specific fitment varies by model and year. Always verify compatibility for your exact bike before ordering.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"Progressive","offers":[{"title":"Default Title","offer_id":53040366714991,"sku":"T14-613980","price":632.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/dc8be224fe57664f8825616d4f34e454L.jpg?v=1777657500","url":"https:\/\/vtwinbikers.com\/products\/progressive-fork-cartridge-kits-harley-davidson-1","provider":"Vtwinbikers","version":"1.0","type":"link"}