{"product_id":"11-2241-1000cc-piston-set-010-oversize","title":"1000cc Piston Set .010 Oversize","description":"\u003cp\u003e\u003c\/p\u003e\u003cp\u003eKeith Black piston set is .010 oversize with a 8.2 compression ratio for 1972-1985 XL 1000cc models. The 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.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFITMENT\u003c\/b\u003e\u003c\/p\u003e\u003cli\u003e1972 \/ 1985 XL  \u003c\/li\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eACCESSORY ITEMS\u003c\/b\u003e\u003c\/p\u003e\u003cli\u003e16-0622\u003c\/li\u003e\u003cli\u003e16-0029\u003c\/li\u003e\u003cli\u003e60-0167\u003c\/li\u003e\u003cp\u003e\u003c\/p\u003e\u003cp\u003e\u003cb\u003eREPLACEMENT PARTS\u003c\/b\u003e\u003c\/p\u003e\u003cli\u003e11-0160\u003c\/li\u003ehttp:\/\/www.vtwinmfg.com\/Instructions\/MS\/KB Inst. Guide XL Dome Pistons and Fitment.pdf","brand":"V-TWIN MANUFACTURING","offers":[{"title":"Default Title","offer_id":44213421441341,"sku":"11-2241","price":315.86,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.widowmakersboneyard.com\/products\/11-2241-1000cc-piston-set-010-oversize","provider":"Widowmaker's Boneyard","version":"1.0","type":"link"}