Wow what an upgrade
I have a pretty steep incline on my driveway and never really noticed more than the bump pulling into driveway, but after stiffening up my suspension with this set and new ST coilovers at the same time, now I have to pull in slowly at an angle because as I come up I feel one tire lift completely off the ground. So yeah, this stiffens up suspension BIG from stock. I LOVE IT!
I was a bit skeptical in purchasing this ST suspensions seay bar as the price was too good and I don't know their reputation. After learning they are a division of KW I felt better. I used the rear sway only and it has made the handling characteristics of my 2011 GTI much more neutral. Significantly less understeer. I installed with new VW bolts as this kit comes only with bar, brackets and bushings. Used no lube as suggested and hear no squeaks so far with about 4000 miles on it.