{"product_id":"keith-black-kb305-005-80-inch-evolution-piston-kit-005-oversize","title":"Keith Black KB305.005 80-Inch Evolution Piston Kit .005 Oversize","description":"Keith Black piston set is .005 oversize with a 9.6:1 compression ratio for 1984-up Big Twin Evolution models.\n\u003cp\u003eThe Keith Black KB305.005 80-inch Evolution Piston Kit is designed with a .005-inch oversize for a 3.498-inch bore and a 9.5:1 compression ratio. The piston uses a hypereutectic alloy cast in a permanent steel mold, supporting a lightweight construction intended to help produce more power, improve fuel economy, and promote durability.\u003c\/p\u003e\u003cp\u003eThe alloy’s low heat transfer helps keep the skirts cooler and minimizes piston expansion. High compression ring placement is designed to support increased power and economy while reducing detonation and increasing top ring temperature. This kit fits 1984–1993 Harley-Davidson FXR models as listed in the product data.\u003c\/p\u003e\u003cp\u003eNew pistons and rings should be properly broken in by running the engine at moderate speeds for at least 500 miles and avoiding excessive operation in lower gears. The product is supplied as a set. Country of origin: Mexico. Manufacturer instructions are referenced in the product data.\u003c\/p\u003e\u003cp\u003eBrand: Keith Black. Part number: KB305.005.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eConstruction: Hypereutectic alloy piston cast in a permanent steel mold\u003c\/li\u003e\n\u003cli\u003eOversize: .005 inch oversize for a 3.498-inch bore\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 9.5:1\u003c\/li\u003e\n\u003cli\u003eHeat Management: Low heat transfer alloy helps keep the skirts cooler and minimizes expansion\u003c\/li\u003e\n\u003cli\u003eRing Placement: High compression ring placement is designed to reduce detonation and increase top ring temperature\u003c\/li\u003e\n\u003cli\u003eFitment: Fits 1984–1993 Harley-Davidson FXR models listed in the product data\u003c\/li\u003e\n\u003cli\u003eUnit of Measure: Set\u003c\/li\u003e\n\u003cli\u003eCountry of Origin: Mexico\u003c\/li\u003e\n\u003c\/ul\u003e\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","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":44583381172311,"sku":"11-2258","price":779.0,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/2276\/2583\/files\/11-2258.jpg?v=1793267605","url":"https:\/\/valleyspeed.net\/en-au\/products\/keith-black-kb305-005-80-inch-evolution-piston-kit-005-oversize","provider":"The Speed Shop Canada","version":"1.0","type":"link"}