{"product_id":"kpmi-black-diamond-intake-valve-o-s-int-valve-twin-cam-88-103-2005-2017-191-17038","title":"KPMI Black Diamond Oversized Intake Valve - Harley Twin Cam 88-103","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;\"\u003eElevate the performance and longevity of your Harley Twin Cam 88-103 engine with the KPMI Black Diamond Oversized Intake Valve. This valve is treated with a proprietary German impregnation process, delivering exceptional wear resistance and reduced friction far beyond standard plating. Crafted from a strong, one-piece stainless steel forging, it's built for superior flow and enduring reliability.\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;\"\u003eDeep surface hardening via Black Diamond impregnation\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eOutperforms chrome and nickel plating for durability\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eLightweight, strong one-piece stainless steel construction\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eOptimized flow profile for enhanced Twin Cam performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFor Twin Cam riders who demand the best from their engine, the KPMI Black Diamond intake valve offers a significant upgrade. The unique German Black Diamond® impregnation process penetrates deep into the valve surface, creating a protective layer that is incredibly resistant to wear and corrosion. This advanced treatment ensures your valvetrain can handle the stresses of higher RPMs and increased power output, maintaining optimal performance for the long haul. It's an investment in your engine's future, designed to keep you on the road and out front.\u003c\/p\u003e\u003ch3\u003eUnmatched Durability and Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eProprietary German Black Diamond® impregnation process for deep surface hardening\u003c\/li\u003e\n\u003cli\u003eSuperior wear and corrosion resistance compared to plated valves\u003c\/li\u003e\n\u003cli\u003eLightweight, strong one-piece stainless steel forging\u003c\/li\u003e\n\u003cli\u003eOptimized flow profile specifically for Twin Cam engines\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eBuilding a Better Twin Cam\u003c\/h3\u003e\u003cp\u003eInstalling KPMI Black Diamond intake valves is a crucial step for any Twin Cam 88-103 owner looking to enhance their engine's internal integrity. These valves are designed to work seamlessly within a performance build, complementing upgraded camshafts and cylinder head work. Ensure your engine breathes freely and reliably, whether you're cruising the open road or pushing the limits on the track.\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 20-20940\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eValve Type:\u003c\/strong\u003e Intake\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngine Compatibility:\u003c\/strong\u003e Twin Cam 88-103\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 4.4 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 2 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 0.5 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.5 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 fit my 2005-2017 Harley Twin Cam engine?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, this intake valve is specifically designed for Twin Cam 88-103 cubic inch engines found in 2005-2017 Harley-Davidson models.\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 makes Black Diamond® valves different from stock or plated valves?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThe German impregnation process penetrates .002\" deep, improving wear resistance and reducing friction far beyond what traditional chrome or nickel plating can offer, leading to a much longer lifespan.\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 one-piece or multi-piece valve design?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis KPMI Black Diamond intake valve features a robust one-piece stainless steel forging, ensuring maximum strength and durability under high-stress conditions.\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 Black Diamond Oversized Intake Valve - Harley Twin Cam 88-103\",\"item\":\"https:\/\/vtwinbikers.com\/products\/kpmi-black-diamond-intake-valve-o-s-int-valve-twin-cam-88-103-2005-28\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Will this fit my 2005-2017 Harley Twin Cam engine?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, this intake valve is specifically designed for Twin Cam 88-103 cubic inch engines found in 2005-2017 Harley-Davidson models.\"}},{\"@type\":\"Question\",\"name\":\"What makes Black Diamond® valves different from stock or plated valves?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The German impregnation process penetrates .002\\\" deep, improving wear resistance and reducing friction far beyond what traditional chrome or nickel plating can offer, leading to a much longer lifespan.\"}},{\"@type\":\"Question\",\"name\":\"Is this a one-piece or multi-piece valve design?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This KPMI Black Diamond intake valve features a robust one-piece stainless steel forging, ensuring maximum strength and durability under high-stress conditions.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53036088885359,"sku":"191-17038","price":51.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_46be372e-c53f-44b9-9867-375113fc0c4c.png?v=1779565424","url":"https:\/\/vtwinbikers.com\/products\/kpmi-black-diamond-intake-valve-o-s-int-valve-twin-cam-88-103-2005-2017-191-17038","provider":"Vtwinbikers","version":"1.0","type":"link"}