There are multiple threads on fitting the Harley grips on the Fury handle bars. The mod must have been stated in another thread. Troy did end up boring the hole out with a round file to fit the billet HD grips on my bikeI'm a little baffled, something is not adding up...To get Harley grips on a VTX1300 you have to modify the switch housing by enlarging the hole from 31mm to 34mm:
VTXOA - View Single Post - 1300/1800 Handlebars & Controls, Harley Grip Mod
There are tons of guys who put on ISO's meant for VTX-1300's on their Fury so I have to assume that the Fury controls have the same 31mm hole in it for the throttle grip. So I a little confused how the Harley grip fit on the Fury without modification.