{"product_id":"1000cc-piston-set-010-oversize-1","title":"1000cc Piston Set .010 Oversize","description":"\u003cp\u003eKeith Black piston set is .010 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 .010 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","brand":"Keith Black","offers":[{"title":"Default Title","offer_id":67617156137145,"sku":"11-2241","price":329.99,"currency_code":"USD","in_stock":false}],"url":"https:\/\/www.thespeedshopusa.com\/products\/1000cc-piston-set-010-oversize-1","provider":"THE SPEED SHOP USA","version":"1.0","type":"link"}