{"product_id":"keith-black-80-inch-evolution-domed-piston-kit-030-for-harley-davidson-fxr","title":"Keith Black 80 Inch Evolution Domed Piston Kit.030 for Harley FXR","description":"\u003cdiv\u003e\n\u003ch1\u003eKeith Black 80 Inch Evolution Domed Piston Kit.030 for Harley FXR\u003c\/h1\u003e\n\u003cp\u003eBoost horsepower and durability on Harley FXR with the Keith Black.030 oversize Evolution domed piston kit, engineered for 1984–1993 Big Twin Evolution engines and delivering a 10.5:1 compression ratio.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHypereutectic alloy construction for strength and efficient heat transfer.\u003c\/li\u003e\n\u003cli\u003eOversize.030 design fits a 3.498-inch bore.\u003c\/li\u003e\n\u003cli\u003eCompression ratio of 10.5:1 for increased horsepower and torque.\u003c\/li\u003e\n\u003cli\u003eLow heat transfer alloy keeps piston skirts cooler, reducing expansion and wear.\u003c\/li\u003e\n\u003cli\u003eHigh ring placement improves sealing, reduces detonation, and increases top ring temperature for durability.\u003c\/li\u003e\n\u003cli\u003eLightweight cast in steel mold ensures consistent quality and performance.\u003c\/li\u003e\n\u003cli\u003ePart number KB266.030.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFitment targets Harley-Davidson FXR models from 1984 to 1993, with a design optimized for Evolution-era performance upgrades. For installation guidance, refer to the provided instructions link. Break-in is essential: run the engine at moderate speeds for at least 500 miles, avoiding excessive low-gear operation to ensure proper piston and ring seating.\u003c\/p\u003eKeith Black dome piston set is.030 oversize with a 10.5:1 compression ratio for 1984-up Big Twin Evolution models.\n\u003cp\u003eThe Keith Black KB266.030 hypereutectic alloy piston kit is engineered for high performance and durability in Harley Davidson FXR models from 1984 to 1993. Crafted using a permanent steel mold casting process, this lightweight piston enhances engine power while promoting fuel efficiency and longevity. The piston features a.030 oversize design to fit a 3.498-inch bore, with a compression ratio of 10.5:1 that optimizes power output and efficiency. Its unique alloy's low heat transfer properties help keep the piston skirts cooler, minimizing expansion and wear under demanding conditions. The high compression ring placement not only boosts power but also reduces detonation and increases ring temperature for better sealing and performance. Proper break-in is essential; run the engine at moderate speeds for at least 500 miles, avoiding excessive low gear operation to ensure optimal piston and ring seating. For installation guidance, refer to the provided instructions link. This piston kit is compatible with a range of FXR models, ensuring an easy upgrade for enthusiasts seeking enhanced performance and reliability in their Harley Davidson motorcycle.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eHypereutectic alloy construction: Provides strength, durability, and efficient heat transfer.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eOversize.030 design: Fits a 3.498-inch bore for precise engine matching.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eHigh compression ratio: 10.5:1 for increased horsepower and torque.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eLow heat transfer alloy: Keeps piston skirts cooler, reducing expansion and wear.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eHigh ring placement: Improves power, reduces detonation, and increases top ring temperature.\u003c\/li\u003e\u003c\/ul\u003e\n\u003cul\u003e\u003cli\u003eLightweight cast in steel mold: Ensures consistent quality and performance.\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":44653145325610,"sku":"11-2226","price":213.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0692\/2285\/8794\/files\/11-2226.jpg?v=1785887216","url":"https:\/\/atticusgoods.com\/products\/keith-black-80-inch-evolution-domed-piston-kit-030-for-harley-davidson-fxr","provider":"Atticus Goods","version":"1.0","type":"link"}