BRAND NEW PART # 1310-1200 FITS: 1991-2017 HARLEY DYNA MODELSNitrogen-charged steel monotube damper bodiesDual-rate progressive wound springs for a smooth, comfortable rideAdjustable spring preloadRide-height adjustable, +/- 1/2″ from size listedBlack shocks feature Black springs and damper bodies with clear anodized end caps/eyeletsBlack shocks feature black springs and damper bodies with black end caps/eyeletsMount with existing hardware Specs:COLOR: BlackCONFIGURATION: Threaded Preload AdjustableDAMPENING: Gas ChargedFINISH: BlackLENGTH: 12″MATERIAL: Aluminum / SteelPACKAGING: PairPOSITION: RearRESERVOIR: InternalSPRING RATE: Progressive ,Nitrogen-charged steel monotube damper bodiesDual-rate progressive wound springs for a smooth, comfortable rideAdjustable spring preloadRide-height adjustable, +/- 1/2″ from size listedBlack shocks feature Black springs and damper bodies with clear anodized end caps/eyeletsBlack shocks feature black springs and damper bodies with black end caps/eyeletsMount with existing hardware