PROGRESSIVE SUSPENSIONPart Number : PR-31-4006 PR-31-4006 Progressive Suspension Standard Height Asymmetrical Fork Monotube Cartridge Kit For 2017-2020 Touring (Excluding FLHTKL) Models Converts dual damper rod forks to high-performance cartridge forks Contains a pair of high-performance, gas-charged mono-tube fork cartridges and custom-tuned fork springs Improves resistance to front brake dive, front end stability, cornering and bottoming control No modification for forks required Lowering kit lowers the front up to 2" Made in the U.S.A. Not for use on LOW models FITMENT INFORMATION Road King - FLHR: 2017-2022Road King Classic - FLHRC: 2017-2019Road King Special - FLHRXS: 2017-2024Electra Glide Standard - FLHT: 2019-2022Electra Glide Ultra Classic - FLHTCU: 2017-2019Electra Glide Ultra Limited - FLHTK: 2017-2024Electra Glide Ultra Limited Low - FLHTKL: 2017-2019Electra Glide Ultra Limited CVO/SE - FLHTKSE: 2017-2021Street Glide - FLHX: 2017-2023Street Glide Special - FLHXS: 2017-2023Street Glide CVO/SE - FLHXSE: 2017-2024Street Glide ST - FLHXST: 2022-2023Road Glide Limited - FLTRK: 2020-2024Road Glide CVO/SE - FLTRKSE: 2022-2023Road Glide Ultra - FLTRU: 2017-2019Road Glide Custom - FLTRX: 2017-2024Road Glide Special - FLTRXS: 2017-2023Road Glide CVO/SE - FLTRXSE: 2022, 2024Road Glide ST - FLTRXST: 2022-2024.