{"product_id":"1200cc-piston-set-030-oversize","title":"1200cc Piston set .030 Oversize","description":"\u003cp\u003eKeith black flat top piston set is .030 oversize with a 9.0:1 compression ratio includes rings.\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 .030 oversize  for a 3.528 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 Sym-Asym Piston Installation Guide.pdf\u003c\/p\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\n1988 Harley Davidson XL\u003cbr\u003e\n1989 Harley Davidson XL\u003cbr\u003e\n1990 Harley Davidson XL\u003cbr\u003e\n1991 Harley Davidson XL\u003cbr\u003e\n1992 Harley Davidson XL\u003cbr\u003e\n1993 Harley Davidson XL\u003cbr\u003e\n1994 Harley Davidson XL\u003cbr\u003e\n1995 Harley Davidson XL\u003cbr\u003e\n1996 Harley Davidson XL\u003cbr\u003e\n1997 Harley Davidson XL\u003cbr\u003e\n1998 Harley Davidson XL\u003cbr\u003e\n1999 Harley Davidson XL\u003cbr\u003e\n2000 Harley Davidson XL\u003cbr\u003e\n2001 Harley Davidson XL\u003cbr\u003e\n2002 Harley Davidson XL\u003cbr\u003e\n2003 Harley Davidson XL","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":55924185563304,"sku":"11-2214","price":505.95,"currency_code":"CAD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0747\/8273\/6552\/files\/11-2214.jpg?v=1787919420","url":"https:\/\/speedguyscanada.com\/products\/1200cc-piston-set-030-oversize","provider":"THE SPEED GUYS CANADA ","version":"1.0","type":"link"}