{"product_id":"kpmi-white-diamond-exhaust-valve-m8-1-264-std-191-17046","title":"KPMI White Diamond Standard Exhaust Valve - Milwaukee-Eight 1.264 in - Harley M8","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 KPMI\u003c\/h2\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.6;\"\u003eKibblewhite Precision Machining supplies valves, valve springs, guides and complete top-end kits used by professional V-twin engine builders. Its black diamond valves and spring kits are a standard specification on high-lift cam builds.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"line-height:1.65;\"\u003eThe KPMI White Diamond exhaust valve is a direct replacement for Harley Milwaukee-Eight (M8) engines, precision-engineered to standard 1.264 inch specifications. This valve is built for enhanced performance and reliability, ensuring your M8 runs strong. It's a critical component for maintaining optimal engine function.\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;\"\u003eDirect replacement for Milwaukee-Eight engines\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eStandard 1.264 inch exhaust valve size\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eWhite Diamond construction resists heat and wear\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eEngineered for M8 performance and reliability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen it's time to refresh your Milwaukee-Eight engine, trust KPMI's White Diamond exhaust valve. This standard-sized 1.264 inch valve is a direct replacement, designed specifically to meet the demands of M8 performance. The White Diamond construction isn't just a name; it signifies a commitment to durability and heat resistance, crucial for the exhaust side of your V-twin's combustion cycle. Whether you're doing a routine refresh or addressing wear, this valve delivers the quality and fitment you expect.\u003c\/p\u003e\u003ch3\u003eEngineered for M8 Durability\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDirect replacement for standard 1.264 inch M8 exhaust valves\u003c\/li\u003e\n\u003cli\u003eWhite Diamond construction enhances heat and wear resistance\u003c\/li\u003e\n\u003cli\u003eDesigned for optimal Milwaukee-Eight engine performance\u003c\/li\u003e\n\u003cli\u003eEnsures reliable and long-lasting valve train operation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eMaintain Your M8's Performance\u003c\/h3\u003e\u003cp\u003eInstalling the right components is key to keeping your Milwaukee-Eight engine running at its peak. This KPMI White Diamond exhaust valve is a straightforward upgrade for any M8 owner looking for a high-quality, direct-fit replacement. It's an essential part of any top-end service, ensuring your engine breathes correctly and maintains its power and efficiency. Pair it with other quality KPMI valvetrain components for a comprehensive upgrade.\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 KPMI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 20-21016H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 1.264 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 3.5 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.2 lbs\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 exhaust valve fit my Twin Cam engine?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eNo, this KPMI White Diamond valve is specifically engineered for Milwaukee-Eight (M8) engines. Twin Cam owners will need a different part number.\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;\"\u003eWhat is the benefit of White Diamond construction?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eWhite Diamond construction is designed to resist heat and wear in the exhaust valve seat, which extends the valve's life, especially under the high-temperature demands of a V-twin engine.\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 direct bolt-in replacement for my M8?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, this 1.264 inch standard-size valve is a direct replacement for stock Milwaukee-Eight engines, requiring no modifications or adapters for installation.\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\":\"Engine\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/all\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"KPMI\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/kpmi\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"KPMI White Diamond Standard Exhaust Valve - Milwaukee-Eight 1.264 in - Harley M8\",\"item\":\"https:\/\/vtwinbikers.com\/products\/kpmi-white-diamond-exhaust-valve-m8-1-264-std-191-17046\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this exhaust valve fit my Twin Cam engine?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, this KPMI White Diamond valve is specifically engineered for Milwaukee-Eight (M8) engines. Twin Cam owners will need a different part number.\"}},{\"@type\":\"Question\",\"name\":\"What is the benefit of White Diamond construction?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"White Diamond construction is designed to resist heat and wear in the exhaust valve seat, which extends the valve's life, especially under the high-temperature demands of a V-twin engine.\"}},{\"@type\":\"Question\",\"name\":\"Is this a direct bolt-in replacement for my M8?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, this 1.264 inch standard-size valve is a direct replacement for stock Milwaukee-Eight engines, requiring no modifications or adapters for installation.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53035888607343,"sku":"191-17046","price":32.78,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/49db-5f0c801b4f00c.jpg?v=1777530060","url":"https:\/\/vtwinbikers.com\/products\/kpmi-white-diamond-exhaust-valve-m8-1-264-std-191-17046","provider":"Vtwinbikers","version":"1.0","type":"link"}