{"product_id":"80-inch-evolution-domed-piston-kit-020","title":"80 inch Evolution Domed Piston Kit .020","description":"\u003cp\u003eKeith Black dome piston set is .020 oversize with a 10.5:1 compression ratio for 1984-up Big Twin Evolution models.\n\u003cbr\u003eThe Keith Black 390 hypereutectic alloy is cast in a permanent steel mold which makes it possible to build a light weight piston that makes more power and uses less fuel and lasts longer. Pistons are .020 over sized  for a 3.498 inch bore and has a 10.5:1 compression ratio.  The low heat transfer of the alloy keeps the skirts cool so piston expansion is minimal. The combination of a low heat transfer piston alloy and high compression ring placement increases power and economy. The high ring placement alone reduces detonation and increases the top ring temperature.                                                           **Note: Run engine at moderate speeds for at least 500 miles  avoiding excessive running in lower gears  in order to properly break-in new pistons and rings. \n\u003cbr\u003e Instructions: http:\/\/www.vtwinmfg.com\/Instructions\/MS\/KB Conversion Piston Guide and Fitment.pdf\u003c\/p\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1984 Harley Davidson FLT\u003cbr\u003e\n1984 Harley Davidson FXR\u003cbr\u003e\n1984 Harley Davidson FXST\u003cbr\u003e\n1985 Harley Davidson FLT\u003cbr\u003e\n1985 Harley Davidson FXR\u003cbr\u003e\n1985 Harley Davidson FXST\u003cbr\u003e\n1986 Harley Davidson FLST\u003cbr\u003e\n1986 Harley Davidson FLT\u003cbr\u003e\n1986 Harley Davidson FXR\u003cbr\u003e\n1986 Harley Davidson FXST\u003cbr\u003e\n1987 Harley Davidson FLST\u003cbr\u003e\n1987 Harley Davidson FLT\u003cbr\u003e\n1987 Harley Davidson FXR\u003cbr\u003e\n1987 Harley Davidson FXST\u003cbr\u003e\n1988 Harley Davidson FLST\u003cbr\u003e\n1988 Harley Davidson FLT\u003cbr\u003e\n1988 Harley Davidson FXR\u003cbr\u003e\n1988 Harley Davidson FXST\u003cbr\u003e\n1989 Harley Davidson FLST\u003cbr\u003e\n1989 Harley Davidson FLT\u003cbr\u003e\n1989 Harley Davidson FXR\u003cbr\u003e\n1989 Harley Davidson FXST\u003cbr\u003e\n1990 Harley Davidson FLST\u003cbr\u003e\n1990 Harley Davidson FLT\u003cbr\u003e\n1990 Harley Davidson FXR\u003cbr\u003e\n1990 Harley Davidson FXST\u003cbr\u003e\n1991 Harley Davidson FLST\u003cbr\u003e\n1991 Harley Davidson FLT\u003cbr\u003e\n1991 Harley Davidson FXD\u003cbr\u003e\n1991 Harley Davidson FXR\u003cbr\u003e\n1991 Harley Davidson FXST\u003cbr\u003e\n1992 Harley Davidson FLST\u003cbr\u003e\n1992 Harley Davidson FLT\u003cbr\u003e\n1992 Harley Davidson FXD\u003cbr\u003e\n1992 Harley Davidson FXR\u003cbr\u003e\n1992 Harley Davidson FXST\u003cbr\u003e\n1993 Harley Davidson FLST\u003cbr\u003e\n1993 Harley Davidson FLT\u003cbr\u003e\n1993 Harley Davidson FXD\u003cbr\u003e\n1993 Harley Davidson FXR\u003cbr\u003e\n1993 Harley Davidson FXST\u003cbr\u003e\n1994 Harley Davidson FLST\u003cbr\u003e\n1994 Harley Davidson FLT\u003cbr\u003e\n1994 Harley Davidson FXD\u003cbr\u003e\n1994 Harley Davidson FXR\u003cbr\u003e\n1994 Harley Davidson FXST\u003cbr\u003e\n1995 Harley Davidson FLST\u003cbr\u003e\n1995 Harley Davidson FLT\u003cbr\u003e\n1995 Harley Davidson FXD\u003cbr\u003e\n1995 Harley Davidson FXST\u003cbr\u003e\n1996 Harley Davidson FLST\u003cbr\u003e\n1996 Harley Davidson FLT\u003cbr\u003e\n1996 Harley Davidson FXD\u003cbr\u003e\n1996 Harley Davidson FXST\u003cbr\u003e\n1997 Harley Davidson FLST\u003cbr\u003e\n1997 Harley Davidson FLT\u003cbr\u003e\n1997 Harley Davidson FXD\u003cbr\u003e\n1997 Harley Davidson FXST\u003cbr\u003e\n1998 Harley Davidson FLST\u003cbr\u003e\n1998 Harley Davidson FLT\u003cbr\u003e\n1998 Harley Davidson FXD\u003cbr\u003e\n1998 Harley Davidson FXST","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":55921732092072,"sku":"11-2225","price":536.95,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/8273\/6552\/files\/11-2225.jpg?v=1787862221","url":"https:\/\/speedguyscanada.com\/products\/80-inch-evolution-domed-piston-kit-020","provider":"THE SPEED GUYS CANADA ","version":"1.0","type":"link"}