{"product_id":"kpmi-compression-releases-release-2-pk-evos-191-27050","title":"KPMI Compression Releases M10 x 1 Thread - Harley Evolution","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;\"\u003eKPMI compression releases, sold in pairs, are designed to reduce hot-start strain on the battery and starter motor of your Harley Evolution V-twin engine. These M10 x 1 threaded valves bleed cylinder pressure, making starting easier and more reliable.\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;\"\u003eReduces hot-start strain on battery and starter\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eM10 x 1 thread pitch for easy installation\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eCustom molded knobs for cool-touch operation\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003e5-7 Newton's closing force for reliable function\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eSold in pairs for complete V-twin coverage\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eDealing with stubborn hot starts on your Harley Evolution can be frustrating and hard on your starter and battery. KPMI compression releases offer a simple yet effective solution. By bleeding off a small amount of cylinder pressure before cranking, they significantly reduce the load on your starting system, leading to quicker, smoother starts. This is a must-have upgrade for any V-twin owner looking to extend the life of their electrical components and ensure reliable ignition every time.\u003c\/p\u003e\u003ch3\u003eReliable Starting, Every Time\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eM10 x 1 thread pitch for direct fitment\u003c\/li\u003e\n\u003cli\u003eReduces strain on starter motor and battery\u003c\/li\u003e\n\u003cli\u003eCustom molded knobs for cool-touch and easy operation\u003c\/li\u003e\n\u003cli\u003e5-7 Newton's closing force resistance for consistent performance\u003c\/li\u003e\n\u003cli\u003eSold in pairs to cover both cylinders of a V-twin\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEssential for V-Twin Longevity\u003c\/h3\u003e\u003cp\u003eThese compression releases are a practical and beneficial addition, especially for higher compression Evolution engines or those operating in warmer climates. They improve the overall starting experience without affecting engine performance once running. Easy to install, this KPMI two-pack provides everything you need to upgrade both cylinders of your Harley Evolution, ensuring your bike fires up with less effort and more consistency.\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 20-21250\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThread Pitch:\u003c\/strong\u003e M10 x 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eQuantity:\u003c\/strong\u003e 2 per pack\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 0.09 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;\"\u003eWhat do compression releases do for my Harley Evolution engine?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eCompression releases bleed off a small amount of cylinder pressure before the engine starts, significantly reducing the load on your starter motor and battery, which results in easier and more reliable starts, especially when hot.\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;\"\u003eHow many compression releases are included in this pack?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis pack includes two compression releases, which is the correct quantity needed to cover both cylinders on a V-twin engine like your Harley Evolution.\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;\"\u003eAre these compression releases difficult to install?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eInstallation typically involves screwing the releases into the cylinder heads. While straightforward, ensure your engine is cool and consult a service manual or professional if you are unsure about the process for your specific model.\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 Compression Releases M10 x 1 Thread - Harley Evolution\",\"item\":\"https:\/\/vtwinbikers.com\/products\/kpmi-compression-releases-release-2-pk-evos-191-27050\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What do compression releases do for my Harley Evolution engine?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compression releases bleed off a small amount of cylinder pressure before the engine starts, significantly reducing the load on your starter motor and battery, which results in easier and more reliable starts, especially when hot.\"}},{\"@type\":\"Question\",\"name\":\"How many compression releases are included in this pack?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This pack includes two compression releases, which is the correct quantity needed to cover both cylinders on a V-twin engine like your Harley Evolution.\"}},{\"@type\":\"Question\",\"name\":\"Are these compression releases difficult to install?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Installation typically involves screwing the releases into the cylinder heads. While straightforward, ensure your engine is cool and consult a service manual or professional if you are unsure about the process for your specific model.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"KPMI","offers":[{"title":"Default Title","offer_id":53035813732463,"sku":"191-27050","price":49.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/f00d-5ab3f9e352bb3.jpg?v=1777529433","url":"https:\/\/vtwinbikers.com\/products\/kpmi-compression-releases-release-2-pk-evos-191-27050","provider":"Vtwinbikers","version":"1.0","type":"link"}