Originally Posted by
dabac
Why not do a net search on "steerer tube extenders"?
There's an internal, quill stem fashion and one external, wraparound fashion. Don't know if I'd dare use an internal on a CF steerer, but the external should be OK - although admittedly not exactly sleek.
OP; +5 on dabac's suggestion.
In the old days this would be a "let me google that for you"
Today; Go to
www.amazon.com and search for steerer extender and find that there is a **** of them. If you then have questions, post them...