I need to fit bar risers to my XVS950 Midnight Star, where can I get throttle cables 3inches longer than standard, Help

you can get them made up at Carrot cycles.

 

I've used them a couple of times now

I don`t think you need longer cables, I change my handlebars with some custom  and this rise the riding position with something like 8-9 cm. I don`t kow what this mean in inch but I don`t had to change the cables. I recommend you to try first with the old ones, if is not long enough, buy others.

As Lassy said buddy, as long as your not fitting something stupid like 9" risers if you just re-route the old cables there will be sufficient length already supplied.