Frequency Sensing Technology (FST) dynamically adjusts damping for optimum ride quality Deflective disc valving The unique Ultra Touring spring combination not only delivers a lowered ride height while it's being ridden, but also while it's on the stand This lowered stance makes it easier to manage your bike at intersections and parking lots, not to mention just swinging your leg over the seat IAS technology - Patented damping technology that separates wheel movement from chassis movement Progressive Suspension has unveiled another breakthrough design called