{"product_id":"wiseco-tracker-piston-kit-evo-flat-big-twin-1340-8-5-1-030-k0215p3","title":"Wiseco Tracker Flat Top 8.5:1 +.030 Piston Kit - Harley Evolution Big Twin","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 Wiseco\u003c\/h2\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.6;\"\u003eWiseco has forged pistons in Mentor, Ohio since 1941, supplying everything from factory race teams to big-bore street builds. Forged construction is what lets a V-twin survive higher compression and more cylinder pressure than the stock cast piston was designed for.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"line-height:1.65;\"\u003eEnhance the performance and longevity of your Evolution Big Twin with the Wiseco Tracker Flat Top Piston Kit. This kit is built for durability and precision, providing a robust solution for engine rebuilds or performance upgrades. Each piston features forged construction and advanced coatings to withstand demanding conditions.\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;\"\u003eForged flat top piston for Evolution Big Twin\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003e8.5:1 compression ratio for pump gas\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003e+.030 overbore for cylinder refresh\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eArmorGlide skirt coating reduces friction\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eForce-fed pin oiling for enhanced lubrication\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eIncludes precision rings for optimal sealing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Wiseco Tracker Flat Top Piston Kit is engineered for Evolution Big Twin 1340cc engines, offering an 8.5:1 compression ratio and a +.030 overbore. This specific sizing is ideal for engines requiring a significant bore to clean up cylinder wear or to achieve a slight displacement increase. The forged crown ensures exceptional strength, while features like generous valve pockets and optimized pin oiling contribute to a long-lasting and reliable engine.\u003c\/p\u003e\u003ch3\u003eDesigned for Lasting Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eForged piston crown with generous valve pockets for clearance\u003c\/li\u003e\n\u003cli\u003ePrecision-fit rings ensure ultimate sealing and power transfer\u003c\/li\u003e\n\u003cli\u003eForce-fed pin oiling for enhanced piston pin lubrication\u003c\/li\u003e\n\u003cli\u003eArmorGlide skirt coating reduces friction and scuff resistance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eRebuild with Confidence\u003c\/h3\u003e\u003cp\u003eOpting for a +.030 overbore allows for a complete refresh of your cylinders, eliminating wear and restoring optimal compression. This 8.5:1 compression ratio is compatible with standard pump gasoline, making it a practical choice for street-focused Evolution Big Twins. Remember to confirm your engine's specific requirements and pair this piston kit with a new top-end gasket set for a complete and secure rebuild.\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 Wiseco\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e K0215P3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEngine:\u003c\/strong\u003e EVO Flat Big Twin 1340\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e 8.5:1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOversized:\u003c\/strong\u003e +.030 inch\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength:\u003c\/strong\u003e 9.5 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth:\u003c\/strong\u003e 4.87 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight:\u003c\/strong\u003e 4 in\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 2.75 lbs\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e United States of America\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 engine does this piston kit fit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis Wiseco Tracker piston kit is designed for Evolution Big Twin 1340cc engines requiring a +.030 overbore. Please confirm your engine's specifications before ordering.\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;\"\u003eDoes this kit include gaskets?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eNo, gasket kits are sold separately. You will need to purchase a complete top-end gasket set specific to your Evolution Big Twin to complete the installation.\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 compression ratio do these pistons provide?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThese pistons are engineered for an 8.5:1 compression ratio, suitable for stock or mildly modified Evolution Big Twin engines running on pump gas.\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\":\"Piston kits \u0026 Components\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/all\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Wiseco\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/wiseco\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Wiseco Tracker Flat Top 8.5:1 +.030 Piston Kit - Harley Evolution Big Twin\",\"item\":\"https:\/\/vtwinbikers.com\/products\/wiseco-tracker-piston-kit-evo-flat-big-twin-1340-8-5-1-030-k0215p3\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What engine does this piston kit fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This Wiseco Tracker piston kit is designed for Evolution Big Twin 1340cc engines requiring a +.030 overbore. Please confirm your engine's specifications before ordering.\"}},{\"@type\":\"Question\",\"name\":\"Does this kit include gaskets?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No, gasket kits are sold separately. You will need to purchase a complete top-end gasket set specific to your Evolution Big Twin to complete the installation.\"}},{\"@type\":\"Question\",\"name\":\"What compression ratio do these pistons provide?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"These pistons are engineered for an 8.5:1 compression ratio, suitable for stock or mildly modified Evolution Big Twin engines running on pump gas.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"Wiseco","offers":[{"title":"Default Title","offer_id":53035851317359,"sku":"K0215P3","price":295.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/a743-5c818a776c2db_5178c565-87af-4ab9-a980-ad521c351eee.jpg?v=1777529739","url":"https:\/\/vtwinbikers.com\/products\/wiseco-tracker-piston-kit-evo-flat-big-twin-1340-8-5-1-030-k0215p3","provider":"Vtwinbikers","version":"1.0","type":"link"}