Arnott had just released their new Ultimate Ride air suspension kit for all the 2018 Harley-Davidson Softail models, which ought to provide a smoother and better handling ride.
Begin Press Release:

MERRITT ISLAND, FL ? February 13, 2018 ? Arnott Motorcycle Air Suspension ? the leader in True Onboard Adjustable Air Suspension kits for motorcycles ? is pleased to announce the introduction of Ultimate Ride Kits for the 2018 Harley-Davidson® Softail®.

All-New Kit, All-New Bikes
For 2018, Harley-Davidson® has combined the popular old school look of the Softail® with the handling and comfort of the Dyna® to produce an all-new line of bikes sure to impress both old and new riders.
Among other improvements, the new line replaces the horizontally mounted rear suspension of the Softail® and the exposed dual shocks of the Dyna® with a single mono shock. Arnott engineers immediately got to work on improving the new cruiser?s rear suspension by designing a fully adjustable Ultimate Ride Series FOX® mono shock and air spring that can be controlled with an on-board compressor and handlebar-mounted inflation switch ? providing exceptional ride quality, confident control while stopped, and enhanced safety. At the core of this patent-pending system is a custom nitrogen-charged FOX

shock absorber paired with a Goodyear® air spring to ensure superior comfort,

ride quality, and durability. This kit includes a powerful compressor, air distribution valve, handlebar-mounted switch an...