1. Great build quality, tough install
I bought this handle bar riser kit because I wanted to ride my bike more then a couple hours and not be in terrible pain. The new riding position helps a lot with that, especially when you pair it with a more comfortable seat.
My first impressions when riding with it are it feels a bit more nimble, you have more leverage and it feels like it steers with less effort and takes some time getting used to but isn't a bad thing. The build quality is great, everything feels very sturdy and is machined very well. I did not have to make any DIY modifications to anything.
The install took me two days, roughly 10 hours. The instructions say 5, but I'm no master mechanic so it took me double. There were some really tough parts such as the upper brake line replacement.
If you have back pain or want to ride for more then a couple hours on your gsxr I highly reccomend these. I was looking at the Helibar risers but I figured that I rather just go all the way with this kit and get the actual bar risers and not just higher clipons. I would say the closest this riding positions feels like is an S1000R.