Legend LEG-1311-0189 AIR Series 13.6" Adjustable Rear Air Shock Absorbers Black for Harley-Davidson FLH Trike 17-UpFeatures 13. 6 length maximizes rear ride height on 2017 and newer trikes utilizing OEM shock mount plates Eliminates the need for a lift kit Levels out trike models that sit low in the rear from the factory Reduces dragging and scuffing of mufflers when rolling through drain basins, backing up to curbs, or loading on a trailer Easier steering due to less trail in the front end Legend AIR Suspensions systems sets the high mark in ultimate ride quality