{"product_id":"keith-black-11-2251-80-inch-flh-fx-piston-set-standard-for-harley-davidson","title":"Keith Black Piston Set 80 Inch FLH-FX for Harley-Davidson","description":"\u003cdiv\u003e\n\u003ch1\u003eKeith Black 11-2251 80 Inch FLH-FX Piston Set for Harley-Davidson\u003c\/h1\u003e\n\u003cp\u003eThe Keith Black 11-2251 80 Inch FLH-FX Piston Set is designed for 1978–1984 Harley-Davidson FL and FX models, featuring a standard-size 3.5 inch bore and an 8.3:1 compression ratio. It uses a hypereutectic alloy and is cast in a permanent steel mold, with rings included for a complete upgrade.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEngine compatibility: Fits 1978–1984 Harley-Davidson FL and FX models, including listed FXR and FLT variants for those years.\u003c\/li\u003e \u003cli\u003eConstruction: High-quality piston set with symmetrical design for balanced operation; durable for restoration or performance upgrades.\u003c\/li\u003e \u003cli\u003eMaterials and finish: Hypereutectic alloy, cast in a permanent steel mold; includes rings.\u003c\/li\u003e \u003cli\u003eOrigin: Made in Mexico, with precision manufacturing to support durability and reliable operation.\u003c\/li\u003e \u003cli\u003ePart number: KB297.STD\u003c\/li\u003e \u003cli\u003eRecommended ring set: 11-1363 - 80 inch Shovelhead Piston Ring Set Standard\u003c\/li\u003e \u003cli\u003eInstallation support: Detailed guidance available; includes recommended accessory tools such as Ring-O-Matic Ring Compressor Tool Kit (SKU 16-0622), Connecting Rod Clamping Tool (SKU 16-0029), and specialized Clamping Tool (SKU 60-0167).\u003c\/li\u003e \u003cli\u003eOEM alignment and performance: Engineered to meet or exceed OEM specifications for a seamless fit and efficient operation.\u003c\/li\u003e \u003cli\u003eBreak-in guidance: Proper installation and break-in are crucial; run the engine at moderate speeds for at least 500 miles to allow pistons and rings to seat.\u003c\/li\u003e \u003cli\u003eReference: Installation guide available at the provided official VTwin MFG link.\u003c\/li\u003e\n\u003c\/ul\u003eThe Keith Black 390 hypereutectic 3.5 inch bore piston set has a 8.3:1 compression ratio and is standard size. Piston set alloy is cast in a permanent steel mold and includes rings.\n\u003cp\u003eUpgrade your Harley Davidson with the Keith Black 11-2251 80 Inch FLH-FX Piston Set Standard, designed specifically for models from 1978 to 1984. This piston set is crafted in Mexico with precision manufacturing to ensure durability and optimal performance. The set includes pistons built to fit Harley Davidson FL and FX models, providing a reliable upgrade for engine rebuilds or performance enhancements. These pistons are engineered to meet or exceed OEM specifications, ensuring a seamless fit and efficient operation within your motorcycle's engine.\u003cbr\u003eProper installation and break-in are crucial for maximizing performance and longevity. It is recommended to run the engine at moderate speeds for at least 500 miles, avoiding excessive running in lower gears to allow the new pistons and rings to properly seat. For detailed installation instructions, consult the official guide available at http:\/\/www.vtwinmfg.com\/Instructions\/MS\/KB Sym-Asym Piston Installation Guide.pdf. This piston set is compatible with a suggested ring set, the 11-1363 80 inch Shovelhead Piston Ring Set Standard, to ensure optimal sealing and engine performance.\u003cbr\u003eThis kit includes all necessary components to complete your piston upgrade, along with recommended accessory items such as the Ring-O-Matic Ring Compressor Tool Kit (SKU 16-0622), the Connecting Rod Clamping Tool (SKU 16-0029), and the specialized Clamping Tool (SKU 60-0167). These tools facilitate proper installation, helping you achieve professional results. Constructed with high-quality materials, these pistons deliver enhanced durability and performance for your Harley Davidson motorcycle, making them a dependable choice for both restoration and performance upgrades.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eEngine Compatibility: Fits 1978-1984 Harley Davidson FL and FX models\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eMaterial: High-quality piston construction for durability and performance\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDesign: Symmetrical design for balanced operation\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCountry of Origin: Made in Mexico for quality assurance\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eInstallation Support: Includes detailed instructions and recommended accessory tools\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eRecommended Ring Set: 11-1363 - 80 inch Shovelhead Piston Ring Set Standard\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson FL 1978\u003cbr\u003e\nHarley Davidson FL 1979\u003cbr\u003e\nHarley Davidson FL 1980\u003cbr\u003e\nHarley Davidson FL 1981\u003cbr\u003e\nHarley Davidson FL 1982\u003cbr\u003e\nHarley Davidson FL 1983\u003cbr\u003e\nHarley Davidson FL 1984\u003cbr\u003e\nHarley Davidson FLT 1979\u003cbr\u003e\nHarley Davidson FLT 1980\u003cbr\u003e\nHarley Davidson FLT 1981\u003cbr\u003e\nHarley Davidson FLT 1982\u003cbr\u003e\nHarley Davidson FLT 1983\u003cbr\u003e\nHarley Davidson FX 1978\u003cbr\u003e\nHarley Davidson FX 1979\u003cbr\u003e\nHarley Davidson FX 1980\u003cbr\u003e\nHarley Davidson FX 1981\u003cbr\u003e\nHarley Davidson FX 1982\u003cbr\u003e\nHarley Davidson FX 1983\u003cbr\u003e\nHarley Davidson FX 1984\u003cbr\u003e\nHarley Davidson FXR 1982\u003cbr\u003e\nHarley Davidson FXR 1983\u003c\/div\u003e","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":44653114196010,"sku":"11-2251","price":213.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/11-2251.jpg?v=1785885518","url":"https:\/\/atticusgoods.com\/products\/keith-black-11-2251-80-inch-flh-fx-piston-set-standard-for-harley-davidson","provider":"Atticus Goods","version":"1.0","type":"link"}