Brrrr. I would be shopping for heated grips. Are the ISO grips a larger diameter then the oem grips? Seems to me they are. you might consider why hardely reduced the size of their sportster grips several years ago. Never did like the IOS grips much, though for me, moving away from oem always takes a while. Eight years and 114K miles to remove a snorkel and install a K&N.
