{"product_id":"keith-black-11-2219-80-inch-evolution-flat-piston-kit-020-for-harley-davidson-fxr","title":"Keith Black 11-2219 80 Inch Evolution Flat Piston Kit Oversize 020 FXR","description":"\u003cdiv\u003e\n\u003ch1\u003eKeith Black 11-2219 80 Inch Evolution Flat Piston Kit Oversize 020 FXR\u003c\/h1\u003e\n\u003cp\u003eKeith Black 11-2219 Evolution flat-top piston kit is.020 oversize with an 8.6:1 compression ratio for 1984-up Big Twin Evolution Harley-Davidson FXR engines. The kit uses a hypereutectic alloy and a 3.498-inch bore to deliver a compact, high-strength piston designed for performance in stock and rebuilt motors.\u003c\/p\u003e\n\u003cp\u003eCrafted with a permanent steel mold casting process, this lightweight piston improves engine power and fuel efficiency. Its low heat transfer properties help keep piston skirts cooler, reducing expansion and wear, while the high ring placement reduces detonation and raises top ring temperature for better durability during high-performance runs.\u003c\/p\u003e\n\u003cp\u003eProper break-in procedures are recommended, including running the engine at moderate speeds for at least 500 miles and avoiding excessive low-gear operation to seat the rings correctly.\u003c\/p\u003e\n\u003cp\u003eThe kit includes all necessary components for installation, but piston rings are not included; use Hastings ring # 2KB258.020 for optimal results. Accessories such as ring compressors and wrist pin ring tools are recommended for installation, and detailed instructions are available online for proper fitting and operation. Made in Mexico.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHarley Davidson FLST 1986-1998\u003c\/li\u003e\n\u003cli\u003eHarley Davidson FLT 1984-1998\u003c\/li\u003e\n\u003cli\u003eHarley Davidson FXD 1991-1998\u003c\/li\u003e\n\u003cli\u003eHarley Davidson FXST 1984-1998\u003c\/li\u003e\n\u003cli\u003eHarley Davidson FXR 1984-1994\u003c\/li\u003e\n\u003c\/ul\u003eKeith Black flat top piston set is.020 oversize with an 8.6:1 compression ratio for 1984-up Big Twin Evolution models.\n\u003cp\u003eThe Keith Black 11-2219 hypereutectic alloy piston kit is designed for optimal performance in Harley Davidson FXR models from 1984 to 1993. Crafted with a permanent steel mold casting process, this lightweight piston enhances engine power, improves fuel efficiency, and extends piston longevity. Its oversize diameter of 3.498 inches and a compression ratio of 8.5:1 make it a reliable upgrade for high-performance applications. The low heat transfer properties of the alloy help keep the piston skirts cool, reducing expansion and wear, while the high compression ring placement boosts power output and fuel economy. This design also minimizes detonation and increases the top ring temperature, contributing to better engine durability and performance. Proper break-in procedures are recommended, including running the engine at moderate speeds for at least 500 miles and avoiding excessive low gear operation to allow the piston rings to seat correctly. The kit includes all necessary components for installation, but piston rings are not included; use Hastings ring # 2KB258.020 for optimal results. Compatible with OEM parts and ideal for rebuilds or performance upgrades, this piston kit ensures durability and efficiency for your Harley FXR engine. Accessories such as ring compressors and wrist pin ring tools are recommended for installation, and detailed instructions are available online for proper fitting and operation.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eConstructed from hypereutectic alloy for strength and durability\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eLightweight design improves power and fuel efficiency\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eLow heat transfer keeps piston skirts cool, reducing expansion\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eOversized.020 for a 3.498-inch bore for custom fit and performance\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eHigh ring placement reduces detonation and enhances top ring temperature\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eSuitable for Harley Davidson FXR models from 1984 to 1993\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eIncludes necessary components for installation, excluding piston rings\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eMade in Mexico with high-quality manufacturing standards\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson FLST 1986\u003cbr\u003e\nHarley Davidson FLST 1987\u003cbr\u003e\nHarley Davidson FLST 1988\u003cbr\u003e\nHarley Davidson FLST 1989\u003cbr\u003e\nHarley Davidson FLST 1990\u003cbr\u003e\nHarley Davidson FLST 1991\u003cbr\u003e\nHarley Davidson FLST 1992\u003cbr\u003e\nHarley Davidson FLST 1993\u003cbr\u003e\nHarley Davidson FLST 1994\u003cbr\u003e\nHarley Davidson FLST 1995\u003cbr\u003e\nHarley Davidson FLST 1996\u003cbr\u003e\nHarley Davidson FLST 1997\u003cbr\u003e\nHarley Davidson FLST 1998\u003cbr\u003e\nHarley Davidson FLT 1984\u003cbr\u003e\nHarley Davidson FLT 1985\u003cbr\u003e\nHarley Davidson FLT 1986\u003cbr\u003e\nHarley Davidson FLT 1987\u003cbr\u003e\nHarley Davidson FLT 1988\u003cbr\u003e\nHarley Davidson FLT 1989\u003cbr\u003e\nHarley Davidson FLT 1990\u003cbr\u003e\nHarley Davidson FLT 1991\u003cbr\u003e\nHarley Davidson FLT 1992\u003cbr\u003e\nHarley Davidson FLT 1993\u003cbr\u003e\nHarley Davidson FLT 1994\u003cbr\u003e\nHarley Davidson FLT 1995\u003cbr\u003e\nHarley Davidson FLT 1996\u003cbr\u003e\nHarley Davidson FLT 1997\u003cbr\u003e\nHarley Davidson FLT 1998\u003cbr\u003e\nHarley Davidson FXD 1991\u003cbr\u003e\nHarley Davidson FXD 1992\u003cbr\u003e\nHarley Davidson FXD 1993\u003cbr\u003e\nHarley Davidson FXD 1994\u003cbr\u003e\nHarley Davidson FXD 1995\u003cbr\u003e\nHarley Davidson FXD 1996\u003cbr\u003e\nHarley Davidson FXD 1997\u003cbr\u003e\nHarley Davidson FXD 1998\u003cbr\u003e\nHarley Davidson FXR 1984\u003cbr\u003e\nHarley Davidson FXR 1985\u003cbr\u003e\nHarley Davidson FXR 1986\u003cbr\u003e\nHarley Davidson FXR 1987\u003cbr\u003e\nHarley Davidson FXR 1988\u003cbr\u003e\nHarley Davidson FXR 1989\u003cbr\u003e\nHarley Davidson FXR 1990\u003cbr\u003e\nHarley Davidson FXR 1991\u003cbr\u003e\nHarley Davidson FXR 1992\u003cbr\u003e\nHarley Davidson FXR 1993\u003cbr\u003e\nHarley Davidson FXR 1994\u003cbr\u003e\nHarley Davidson FXST 1984\u003cbr\u003e\nHarley Davidson FXST 1985\u003cbr\u003e\nHarley Davidson FXST 1986\u003cbr\u003e\nHarley Davidson FXST 1987\u003cbr\u003e\nHarley Davidson FXST 1988\u003cbr\u003e\nHarley Davidson FXST 1989\u003cbr\u003e\nHarley Davidson FXST 1990\u003cbr\u003e\nHarley Davidson FXST 1991\u003cbr\u003e\nHarley Davidson FXST 1992\u003cbr\u003e\nHarley Davidson FXST 1993\u003cbr\u003e\nHarley Davidson FXST 1994\u003cbr\u003e\nHarley Davidson FXST 1995\u003cbr\u003e\nHarley Davidson FXST 1996\u003cbr\u003e\nHarley Davidson FXST 1997\u003cbr\u003e\nHarley Davidson FXST 1998\u003c\/div\u003e","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":44653149683754,"sku":"11-2219","price":198.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/11-2219.jpg?v=1785887819","url":"https:\/\/atticusgoods.com\/products\/keith-black-11-2219-80-inch-evolution-flat-piston-kit-020-for-harley-davidson-fxr","provider":"Atticus Goods","version":"1.0","type":"link"}