{"product_id":"kpmi-valve-seat-powd-metal-54-1mm-evo-big-twin-1984-1999-xl-191-57095","title":"KPMI Valve Seat - Powd Metal 54.1mm EVO BIG Twin 1984-1999\/XL — Harley-Davidson (1980-2017)","description":"\u003cp\u003eKPMI Kibblewhite valve seat in powdered metal for Harley EVO Big Twin and Sportster, 1984–1999. Kibblewhite's proprietary material resists microwelding and seat recession while running on leaded, unleaded, methanol, and ethanol blends with excellent thermal stability.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eKibblewhite proprietary powdered metal compound\u003c\/li\u003e\n  \u003cli\u003eCompatible with leaded, unleaded, methanol, and ethanol fuels\u003c\/li\u003e\n  \u003cli\u003eResists microwelding and valve face recession\u003c\/li\u003e\n  \u003cli\u003eGenerous radius on leading edge for easier installation\u003c\/li\u003e\n  \u003cli\u003eThermal stability for street and performance riding\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 10-SC541\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDiameter:\u003c\/strong\u003e 54.1 mm\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 3.6 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2.3 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 0.85 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.15 lbs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson EVO Big Twin and Sportster (XL) models, 1984–1999.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWill this valve seat work with ethanol fuel?\u003c\/h3\u003e\n\u003cp\u003eYes — Kibblewhite's proprietary material is fully compatible with ethanol and methanol fuel blends, as well as leaded and unleaded gasoline.\u003c\/p\u003e\n\u003ch3\u003eDoes this fit my 2000+ Sportster?\u003c\/h3\u003e\n\u003cp\u003eNo — this part is for 1984–1999 EVO engines. 2000 and newer Sportsters use different seat specifications.\u003c\/p\u003e\n\u003ch3\u003eWhat's the main advantage over OEM seats?\u003c\/h3\u003e\n\u003cp\u003eKibblewhite's material resists microwelding and recession that can occur with stock seats, extending valve life and improving reliability.\u003c\/p\u003e\n\u003ch3\u003eIs installation difficult?\u003c\/h3\u003e\n\u003cp\u003eThe generous radius on the leading edge makes seating easier during installation, but valve seat work requires proper machine shop equipment and expertise.\u003c\/p\u003e\n\u003ch3\u003eCan I use this with a performance cam?\u003c\/h3\u003e\n\u003cp\u003eYes — this seat is suitable for street and performance applications, including higher-lift cams and increased valve speeds.\u003c\/p\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53035011342447,"sku":"191-57095","price":12.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_25bc1c76-b016-433b-92cd-43c2101e56ce.png?v=1779559128","url":"https:\/\/vtwinbikers.com\/products\/kpmi-valve-seat-powd-metal-54-1mm-evo-big-twin-1984-1999-xl-191-57095","provider":"Vtwinbikers","version":"1.0","type":"link"}