{"product_id":"s-s-cycle-valve-springs-1984-2004-harley-davidson-sportster-models","title":"S\u0026S Cycle Valve Springs — 1984-2004 Harley-Davidson Sportster Models","description":"\u003cp\u003eS\u0026amp;S Cycle Sidewinder .650\" valve spring kit for 1984-2004 Harley-Davidson Sportster models, engineered from Kobe alloy wire and nitrided for durability in high-RPM applications. Includes chromoly forged retainers, keepers, collars, and shims for a complete valve spring upgrade.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eKobe alloy wire with micro shot peening and nitriding\u003c\/li\u003e\n  \u003cli\u003eHigh-performance conical single-wire spring design\u003c\/li\u003e\n  \u003cli\u003eChromoly forged retainers with CNC-machined 9-degree locks\u003c\/li\u003e\n  \u003cli\u003eComplete kit: springs, keepers, top and bottom collars, shims included\u003c\/li\u003e\n  \u003cli\u003e.650\" spring height for stock and S\u0026amp;S Super Stock heads\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 S\u0026amp;S Cycle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 900-0050\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 1.35 lb\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Components \/ Valve Springs, Retainers\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits 1984-2004 Harley-Davidson Sportster models. Compatible with Twin Cam 88 Big Twins using stock heads (7mm and 5\/16\" valve stems) and all S\u0026amp;S Super Stock heads (5\/16\" valve stems).\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eDoes this kit include everything I need to install?\u003c\/h3\u003e\n\u003cp\u003eYes — the kit includes valve springs, chromoly forged retainers, keepers, top and bottom collars, and shims. No additional parts needed.\u003c\/p\u003e\n\u003ch3\u003eWill this fit my 2005+ Sportster?\u003c\/h3\u003e\n\u003cp\u003eNo — this part is for 1984-2004 Sportster models. Newer Sportster generations use different spring specifications.\u003c\/p\u003e\n\u003ch3\u003eCan I use these with aftermarket cylinder heads?\u003c\/h3\u003e\n\u003cp\u003eThese are designed for stock Harley heads and S\u0026amp;S Super Stock heads. Verify compatibility with other aftermarket heads before ordering.\u003c\/p\u003e\n\u003ch3\u003eDo these require valve job or head work?\u003c\/h3\u003e\n\u003cp\u003eInstallation requires removing the cylinder head and valve cover. Professional machine shop service is recommended unless you have engine rebuilding experience.\u003c\/p\u003e\n\u003ch3\u003eWhat valve stem sizes do these fit?\u003c\/h3\u003e\n\u003cp\u003eCompatible with both 7mm and 5\/16\" valve stems found on stock Twin Cam 88 Big Twin heads, and 5\/16\" stems on S\u0026amp;S Super Stock heads.\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040420847727,"sku":"T14-619295","price":254.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_1e521bb7-f8a1-4969-8f63-cf456066b3ce.png?v=1779566551","url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-valve-springs-1984-2004-harley-davidson-sportster-models","provider":"Vtwinbikers","version":"1.0","type":"link"}