Here's a thread to share what risers can be used on the NineT, install photos and info appreciated.
After getting a custom Bill Mayer seat which raises me up a little, risers were very much needed for a comfortable riding position for me.
I installed these ROX risers, part # 1R-P2PPA giving me an adjustable combined 2" lift and push back.
The install was straightforward and the cables seem to be long enough without needed custom lines made. Though I do have my hand levers moved towards the middle about an inch to make the pulling on the levers good for me.
The clutch line was tighter than the brake line, to get a little more length I took it out of the clip by my foot on the rear of the engine, pictured below.
I've very happy with the riding position now, between the fairing, seat and risers the ninet fits me like a glove and is ready for long rides.
Where I gained the extra slack.