{"product_id":"keith-black-883cc-conversion-piston-set-040-oversize-for-harley-davidson-xl-models","title":"Keith Black KB272.040 Oversize 883cc Piston Set For Harley XL","description":"\u003cdiv\u003e\n\u003ch1\u003eKeith Black KB272.040 Oversize 883cc Piston Set For Harley XL\u003c\/h1\u003e\n\u003cp\u003eKeith Black KB272.040 oversize.040 piston set for Harley XL delivers a 3.498-inch bore and a 9:1 compression ratio, engineered to boost power and efficiency on 1986-up XL Evolution engines.\u003c\/p\u003e \u003ch2\u003eMaterial and design\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMaterial: Hypereutectic alloy for strength and heat resistance\u003c\/li\u003e \u003cli\u003eManufacturing: Cast in a permanent steel mold for lightweight construction\u003c\/li\u003e \u003cli\u003eOversize:.040 inches over, with a bore diameter of ≈3.498 inches\u003c\/li\u003e \u003cli\u003eCooling characteristics: Alloy’s low heat transfer helps keep the skirts cooler, aiding longevity\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePerformance and durability\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eCompression: 9:1 for balanced performance and fuel efficiency\u003c\/li\u003e \u003cli\u003eHigh ring placement: Reduces detonation and increases top ring temperature, contributing to smoother operation\u003c\/li\u003e \u003cli\u003eDurability: Extended piston life from alloy properties and cooling behavior\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eFitment and use\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eApplication: Fits Harley-Davidson XL models from 1986 through 1995\u003c\/li\u003e \u003cli\u003eCompatibility note: For 2009-UP XL 883 cylinders, requires separate purchase of 1200cc cylinders\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eBreak-in guidance\u003c\/h2\u003e\n\u003cp\u003eRun the engine at moderate speeds for at least 500 miles during break-in to ensure optimal performance and longevity.\u003c\/p\u003eKeith Black dish piston set is.040 oversize with a 9.0:1 compression ratio for 1986-up XL Evolution models.\n\u003cp\u003eUpgrade your Harley Davidson XL motorcycle with the Keith Black KB272.040 piston set, designed for improved performance and durability. Crafted from hypereutectic alloy, these pistons are cast in a permanent steel mold, allowing for the creation of lightweight components that deliver more power while using less fuel. With a bore diameter of approximately 3.498 inches and a 9:1 compression ratio, these pistons are optimized for performance and efficiency. The alloy’s low heat transfer properties help keep the skirts cool, minimizing piston expansion and enhancing longevity. The high compression ring placement not only boosts power but also reduces detonation and increases the top ring temperature, contributing to smoother engine operation and better fuel economy.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eMaterial: Hypereutectic alloy for strength and heat resistance\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDesign: Cast in a permanent steel mold for lightweight construction\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eBore Size:.040 inches over-sized for a 3.498 inch bore\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eCompression Ratio: 9:1 for balanced performance and fuel efficiency\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003ePerformance Benefits: High ring placement reduces detonation and improves top ring temperature\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eDurability: Extended piston life due to alloy properties and cooling characteristics\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eApplication: Fits Harley Davidson XL models from 1986 through 1995, including 2009-UP XL 883 cylinders with separate purchase of 1200cc cylinders\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eNote: Run engine at moderate speeds for at least 500 miles during break-in to ensure optimal performance and longevity\u003c\/li\u003e\u003c\/ul\u003e\n\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson XL 1986\u003cbr\u003e\nHarley Davidson XL 1987\u003cbr\u003e\nHarley Davidson XL 1988\u003cbr\u003e\nHarley Davidson XL 1989\u003cbr\u003e\nHarley Davidson XL 1990\u003cbr\u003e\nHarley Davidson XL 1991\u003cbr\u003e\nHarley Davidson XL 1992\u003cbr\u003e\nHarley Davidson XL 1993\u003cbr\u003e\nHarley Davidson XL 1994\u003cbr\u003e\nHarley Davidson XL 1995\u003cbr\u003e\nHarley Davidson XL 1996\u003cbr\u003e\nHarley Davidson XL 1997\u003cbr\u003e\nHarley Davidson XL 1998\u003cbr\u003e\nHarley Davidson XL 1999\u003cbr\u003e\nHarley Davidson XL 2000\u003cbr\u003e\nHarley Davidson XL 2001\u003cbr\u003e\nHarley Davidson XL 2002\u003cbr\u003e\nHarley Davidson XL 2003\u003cbr\u003e\nHarley Davidson XL 2004\u003cbr\u003e\nHarley Davidson XL 2005\u003cbr\u003e\nHarley Davidson XL 2006\u003cbr\u003e\nHarley Davidson XL 2007\u003cbr\u003e\nHarley Davidson XL 2008\u003cbr\u003e\nHarley Davidson XL 2009\u003cbr\u003e\nHarley Davidson XL 2010\u003cbr\u003e\nHarley Davidson XL 2011\u003cbr\u003e\nHarley Davidson XL 2012\u003cbr\u003e\nHarley Davidson XL 2013\u003cbr\u003e\nHarley Davidson XL 2014\u003cbr\u003e\nHarley Davidson XL 2015\u003cbr\u003e\nHarley Davidson XL 2016\u003cbr\u003e\nHarley Davidson XL 2017\u003cbr\u003e\nHarley Davidson XL 2018\u003cbr\u003e\nHarley Davidson XL 2019\u003cbr\u003e\nHarley Davidson XL 2020\u003cbr\u003e\nHarley Davidson XL 2021\u003cbr\u003e\nHarley Davidson XL 2022\u003cbr\u003e\nHarley Davidson XL 2023\u003cbr\u003e\nHarley Davidson XL 2024\u003cbr\u003e\nHarley Davidson XL 2025\u003cbr\u003e\nHarley Davidson XL 2026\u003c\/div\u003e","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":44653132382250,"sku":"11-2233","price":155.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/11-2233.jpg?v=1785886409","url":"https:\/\/atticusgoods.com\/products\/keith-black-883cc-conversion-piston-set-040-oversize-for-harley-davidson-xl-models","provider":"Atticus Goods","version":"1.0","type":"link"}