I am 6’3” and have the Harley 3” extensions. They look good and are of excellent quality, but I do believe I could have used the extra inch offered by the 4 inch ones.
I HAVE A 06 FXST WITH THE NESS KIT ON AND I LOVE IT. IVE PUT IT ON TWO OF MY BUDDIES BIKES AND THEY LOVE IT ALSO. IM 6"1 AND ITS ALL GOOD. JUST ADD SOME LONGER PEGS AND IT MAKES THEM EVEN BETTER.