{"product_id":"kpmi-black-diamond-o-s-int-valve-evo-twin-cam-84-04-191-17034","title":"KPMI BLACK DIAMOND O\/S INT. VALVE EVO\/TWIN CAM `84-04 — Harley-Davidson Electra Glide Classic, Softail Heritage Classic, Softail Springer (1984-2017)","description":"\u003cp\u003eKPMI Black Diamond oversized intake valve for Evolution and Twin Cam V-twin engines, 1984–2004. Direct replacement for stock intake valves with oversized head design to improve port flow and scavenge efficiency.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eOversized intake valve head design\u003c\/li\u003e\n  \u003cli\u003eDirect stock valve replacement\u003c\/li\u003e\n  \u003cli\u003eFits Evolution and Twin Cam engines\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 KPMI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 20-20915\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 4.4 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson Evolution and Twin Cam V-twin engines from 1984 through 2004 model years.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWill this fit my 2005+ Twin Cam engine?\u003c\/h3\u003e\n\u003cp\u003eNo — this part is designed for Evolution and Twin Cam engines through 2004. 2005 and newer require a different valve.\u003c\/p\u003e\n\u003ch3\u003eIs this a direct bolt-in replacement?\u003c\/h3\u003e\n\u003cp\u003eYes — the Black Diamond valve replaces the stock intake valve using the existing valve seat and guides.\u003c\/p\u003e\n\u003ch3\u003eWhat's the benefit of an oversized valve?\u003c\/h3\u003e\n\u003cp\u003eThe larger head improves intake port flow and cylinder scavenging, which can increase volumetric efficiency at higher RPM.\u003c\/p\u003e\n\u003ch3\u003eDo I need to have my engine tuned after installation?\u003c\/h3\u003e\n\u003cp\u003eA professional should verify valve clearances and timing after installation to ensure proper engine operation.\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53036088655983,"sku":"191-17034","price":41.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_7b271967-27c7-452f-b739-64f8d279ed0a.png?v=1779565351","url":"https:\/\/vtwinbikers.com\/products\/kpmi-black-diamond-o-s-int-valve-evo-twin-cam-84-04-191-17034","provider":"Vtwinbikers","version":"1.0","type":"link"}