The lowered tube kit using the 1" option..you have a choice of lowering 1" or 2" although not many people lower 2". Don't want to run into fender clearance issues.
According to Progressive technical, the standard monotube kit 31-2500 will lower the front 1/2" below standard height due to "sag" that's Progressives
spring design....Their lowering kit 31-2501 installing their 1" drop configuration is really 1.5" lower than OE standard......so based on Progressives specs the
31-2501 kit is designed for the 21" front tire/wheel installs to balance the front end geometry......
I found this out the hard way on my '12 SESG,,, installing the 31-2501 lowering kit,,, all said & done i removed the lowering kit 31-2501 & re installed the standard height monotube kit 31-2500 & the bike sits the way it should & handles the way it should

I would definitely install the monotubes again, just a matter of using the correct parts for the correct application.