This Monotube Fork Lowering Kit fits Harley-Davidson Softail Slim, Softail Slim S, and Heritage Softail models. The replacement kit includes gas charged Monotube damper cartridges and custom tuned fork springs. Spring rate and damping are pre-set.

Fitment

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

Harley-Davidson

Model	Years
FLS 1690 ABS	2012-2017
FLS 1690	2012-2017
FLSS 1800 ABS	2016-2017
FLST 1450	2006
FLSTC 1450	2000-2006
FLSTC 1584 ABS	2011
FLSTC 1584	2007-2011
FLSTC 1690 ABS	2012-2017
FLSTC 1690	2012-2013
FLSTCI 1450 EFI	2001-2006
FLSTF 1450	2000-2006
FLSTF 1584 ABS	2011
FLSTF 1584	2007-2011
FLSTF 1690 ABS	2012-2017
FLSTF 1690	2012-2014
FLSTFB 1584 ABS	2011
FLSTFB 1584	2010-2011
FLSTFB 1690 ABS	2012-2017
FLSTFB 1690	2012-2013
FLSTFBS 1800 ABS	2016-2017
FLSTFI 1450 EFI	2001-2006
FLSTFI 1550 EFI	2005
FLSTFSE 1690	2005
FLSTFSE2 1690	2006
FLSTI 1450 EFI	2006
FLSTN 1450	2005-2006
FLSTN 1584 ABS	2011
FLSTN 1584	2007-2011
FLSTN 1690 ABS	2012-2017
FLSTN 1690	2012-2013
FLSTNI 1450 EFI	2005-2006
FLSTNSE 1800 ABS	2014-2015
FLSTSB 1584	2008-2011
FLSTSE 1800	2010
FLSTSE2 1800 ABS	2011
FLSTSE2 1800	2011
FLSTSE3 1800 ABS	2012

Specification

Type	Lowering kit
Line	Monotube
Weight	3.913 kg
Manufacturer part number	31-2504
Brand	Progressive Suspension

Progressive Suspension

Progressive Suspension Monotube Fork Lowering Kit 31-2504 for Harley-Davidson Softail 2000–2017