Arnott's Air Ride on mine. Installed it myself and way cheaper than Legends and can be had for less than the MSRP, if you look around on the net. This is my 3rd season with it and I have had no issues.

Hit the switch up and the bike gets jacked up high enough to hit the curves. Hit the switch down and it drops my bike down until the rear fender just barely sits on top of my tire.