{"product_id":"1000cc-piston-set-020-oversize","title":"1000cc Piston Set .020 Oversize","description":"\u003cp\u003eKeith Black dome piston set is .020 oversize with a 8.2 compression ratio for 1972-1985 XL 1000cc 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 oversize  for a 3.188 inch bore and has a 9:1 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 Inst. Guide XL Dome Pistons and Fitment.pdf\u003c\/p\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1972 Harley Davidson XL\u003cbr\u003e\n1973 Harley Davidson XL\u003cbr\u003e\n1974 Harley Davidson XL\u003cbr\u003e\n1975 Harley Davidson XL\u003cbr\u003e\n1976 Harley Davidson XL\u003cbr\u003e\n1977 Harley Davidson XL\u003cbr\u003e\n1978 Harley Davidson XL\u003cbr\u003e\n1979 Harley Davidson XL\u003cbr\u003e\n1980 Harley Davidson XL\u003cbr\u003e\n1981 Harley Davidson XL\u003cbr\u003e\n1982 Harley Davidson XL\u003cbr\u003e\n1983 Harley Davidson XL\u003cbr\u003e\n1984 Harley Davidson XL\u003cbr\u003e\n1985 Harley Davidson XL","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":55921732845736,"sku":"11-2242","price":567.95,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/8273\/6552\/files\/11-2242.jpg?v=1787862288","url":"https:\/\/speedguyscanada.com\/products\/1000cc-piston-set-020-oversize","provider":"THE SPEED GUYS CANADA ","version":"1.0","type":"link"}