Here is a post from a member that did this modification.
Hydraulic Clutch on Vulcan 900
I added a Hydraulic clutch to my 900.Why? The main reason is because of the Harley Fairing the route of the clutch cable was not ideal.I had problems with the friction zone moving on me. And I thought it would be cool to have a Hydraulic clutch. The slave cylinder I used cost $25.00, was a cheap...