This Progressive Suspension 49 mm Fork Preload Adjuster Kit fits Harley-Davidson Dyna Switchback, Softail Deluxe 107, Softail Fat Boy 107, and Softail Fat Boy 114. These adjusters replace the stock fork tube plugs and include a 1/2" hex adjustment tool. The threaded adjuster allows for 20mm of adjustment.

Fitment

Select your make, then check the exact model and year.

Harley-Davidson

Model	Years
FLD 1690 ABS	2012-2016
FLD 1690	2012-2013
FLDE 1750 ABS	2018-2020
FLFB 1750 ABS	2018-2020
FLFBS 1868 ABS	2018-2024
FLFBS 1923 ABS	2025
FLH 1868 ABS	2021
FLHC 1750 ABS	2018-2022
FLHCS 1868 ABS	2018-2024
FLHCS 1923 ABS	2025
FLHFB 1868 ABS	2023
FLHR 1690 ABS	2014-2016
FLHR 1690	2014-2015
FLHR 1750	2019
FLHR 1750 ABS	2017-2022
FLHR 1750	2017-2018
FLHRC 1690 ABS	2014-2016
FLHRC 1750 ABS	2017-2019
FLHRSE6 1800 ABS	2014
FLHRXS 1750 ABS	2017-2018
FLHRXS 1868 ABS	2019-2025
FLHT 1750 ABS	2019-2022
FLHTCU 1690 ABS	2014-2016
FLHTCU 1750 ABS	2017-2019
FLHTCUL 1690 ABS	2015-2016
FLHTCUTG 1690	2014-2016
FLHTCUTG 1750 ABS	2019
FLHTCUTG 1750	2017-2018
FLHTCUTG 1868 ABS	2020-2024
FLHTCUTGSE 1923 ABS	2020-2022
FLHTK 1690 ABS	2014-2016
FLHTK 1750 ABS	2017-2018
FLHTK 1868 ABS	2019-2024
FLHTKL 1690 ABS	2015-2016
FLHTKL 1750 ABS	2017-2018
FLHTKL 1868 ABS	2019
FLHTKSE 1800 ABS	2014-2016
FLHTKSE 1868 ABS	2017
FLHTKSE 1923 ABS	2018-2021
FLHX 1690 ABS	2014-2016
FLHX 1690	2014-2016
FLHX 1750	2019
FLHX 1750 ABS	2017-2023
FLHX 1750	2017-2018
FLHX 1923 ABS	2024-2026
FLHXL 1923 ABS	2026
FLHXLSE 1977 ABS	2026
FLHXS 1690 ABS	2014-2016
FLHXS 1750 ABS	2017-2018
FLHXS 1868 ABS	2019-2023
FLHXSE 1800 ABS	2015-2016
FLHXSE 1868 ABS	2017
FLHXSE 1923 ABS	2018-2022
FLHXSE 1977 ABS	2023-2026
FLHXST 1923 ABS	2022-2023
FLHXSTSE 1977 ABS	2026
FLI 1868 ABS	2024
FLSB 1750 ABS	2018-2021
FLSL 1750 ABS	2018-2021
FLTRK 1868 ABS	2020-2024
FLTRKSE 1923 ABS	2022
FLTRT 1868 ABS	2023-2024
FLTRU 1690 ABS	2016
FLTRU 1750 ABS	2017-2018
FLTRU 1868 ABS	2019
FLTRUSE2 1800 ABS	2015-2016
FLTRX 1690 ABS	2015-2016
FLTRX 1690	2015-2016
FLTRX 1750	2019
FLTRX 1750 ABS	2017-2023
FLTRX 1750	2017-2018
FLTRX 1923 ABS	2024-2026
FLTRXL 1923 ABS	2026
FLTRXS 1690 ABS	2015-2016
FLTRXS 1750 ABS	2017-2018
FLTRXS 1868 ABS	2019-2023
FLTRXSE 1923 ABS	2018-2021
FLTRXSE 1977 ABS	2023-2025
FLTRXSTSE 1977 ABS	2024-2026
FXBB 1750 ABS	2018-2020
FXBB 1923 ABS	2025
FXBBS 1868 ABS	2021-2024
FXBBS 1868	2021
FXBR 1750 ABS	2018-2020
FXBR 1923 ABS	2023-2025
FXBRS 1868 ABS	2018-2022
FXD 1584	2007-2010
FXDB 1584 ABS	2012-2013
FXDB 1584	2007-2013
FXDB 1690 ABS	2014-2017
FXDB 1690	2014-2017
FXDBA 1584 ABS	2013
FXDBA 1584	2013
FXDBA 1690 ABS	2013
FXDBA 1690	2013
FXDBB 1690 ABS	2014-2015
FXDBB 1690	2014-2015
FXDBC 1690 ABS	2016
FXDBC 1690	2016
FXDBI 1450 EFI	2006
FXDBP 1690 ABS	2013-2016
FXDBP 1690	2013-2016
FXDC 1584 ABS	2012-2013
FXDC 1584	2007-2013
FXDC 1690 ABS	2014
FXDC 1690	2014
FXDCI 1450 EFI	2006
FXDF 1584 ABS	2012
FXDF 1584	2008-2011
FXDF 1690 ABS	2012-2017
FXDF 1690	2012-2017
FXDFSE 1800	2009
FXDFSE2 1800	2010
FXDI 1450 EFI	2006
FXDI35 1450 EFI	2006
FXDL 1584	2007-2009
FXDL 1690 ABS	2014-2017
FXDL 1690	2014-2017
FXDLI 1450 EFI	2006
FXDLS 1800 ABS	2016-2017
FXDSE 1800	2007
FXDSE2 1800	2008
FXDWG 1584 ABS	2012
FXDWG 1584	2007-2008, 2010-2011
FXDWG 1690 ABS	2012-2017
FXDWG 1690	2012-2013
FXDWGI 1450 EFI	2006
FXFB 1750 ABS	2018
FXLR 1750 ABS	2018-2020
FXSB 1690 ABS	2013-2017
FXSB 1690	2013
FXST 1750 ABS	2020-2024
FXST 1750	2021

Specification

Type	Fork damper
Weight	0.651 kg
Manufacturer part number	31-5056
Brand	Progressive Suspension

Progressive Suspension

Progressive Suspension 49 mm Fork Preload Adjuster Kit 31-5056 for Harley-Davidson Dyna Switchback / Deluxe 107 / Fat Boy 107 & more