it is amazing how many little things you have customized on a bike you have had for a long time. They are only noticeable once they disappear. And so it was with my grips which had grip puppies whenever the machine had thinner grips than my hands would like. Hand fatigue was evident as soon as long rides took place. Rummaging through the parts bins produced a brand new pair that were not intended for some other machine. Five minutes later, the grips were at a far more comfortable circumference. On a short ride, the heated grips still come through, but their effect is certainly dulled.