+1. Just got mine installed Thursday at Daytona.
I'm 5'8" with a 30" inseam.
Had them installed at the rear most position.
Rode 1000+ miles yesterday with them. Can put my feet on the pegs, or my heels on top of the pegs and stretch the hamstrings.
Thinking about moving them forward one click to see how that works.
Great purchase!
PS - I got some Kury Ergo IIIs that do not have the extension to sell now...