PROGRESSIVE SUSPENSIONPart Number : PR-422-4035C PR-422-4035C Progressive suspension system for the venerable Softail style chassis is exclusively available as an adjustable ride height version. Two inches of ride height adjustment as well as adjustable for spring preload to accommodate varying loads and rider weights.Details: Fully adjustable for ride height and spring preload Tune suspension to match riding style Shocks feature a show chrome cover Pair of progressive-rate coil springs and purpose-designed monotube dampers provide superior suspension performance Dampers feature a nitrogen charge that eliminates internal oil cavitation and helps create a consistent ride while resisting heat-induced fade Shocks can be adjusted up to 2" lower than stockPrice is for a pair. FITMENT INFORMATIONSoftail Heritage - FLST: 1989-1990Softail Heritage Classic - FLSTC: 1989-1999Softail Fat Boy - FLSTF: 1990-1999Softail Deluxe - FLSTN: 1993-1996Softail Heritage Springer - FLSTS: 1997-1999Softail - FXST: 1989-1999Softail Night Train - FXSTB: 1998-1999Softail Custom - FXSTC: 1989-1998Softail Springer - FXSTS: 1989-1999.