[quote=livernose]
But the Rocket 88 clamp fits perfectly on my daughter’s 2001 HG Pro.
I’m thinking there are 2 slightly different sizes.
[/quote]
Wow that is weird, but that must be the case. Maybe the long travel fullies were built with a thicker and/or larger seattube?
I don’t have any of the later gen bikes to compare, but all of mine have the same seatpost size (26.8, with a 30.8 seat tube diameter).