dsbrandt raises the ? of lever arm and how high one should risk mounting the bar above the top tube. IMO of the three options: high rise stem($10-100), new fork with
longer steering tube ($100-300) or JoeTBMs stemriser at $11, the stemriser makes most sense. I see little difference between a longer carbon steering tube and a stemriser
with respect to mechanical advantage stress on the fork. One could argue similarly about stems in the 14cm range putting stress on the steering tube as well. If you drill
down into the fork manufacturers lit some do mention limits on how tall the installed steering tube should be above the head tube. Sort of analogous to the max extension
put on seat posts, where admittedly the stress is a LOT higher.
You will have to rejigger your front brake cable/housing and possibly the RD/FD cables and housing as well when you do raise the bar however you do it.
Last edited by sch; 10-11-19 at 02:23 PM.