Progressive Suspension 11-1536 Heavy Duty Fork Spring Kit

Heavy duty version of the Progressive Suspension fork springs. The cost effective go-to for a substantial increase in front end ride quality. Include Progressive Suspension rate springs combined with preload spacers. Can improve front end stability and brake dive control as well as increase comfort for heavier riders or those looking for a firm high-performance feel out of their forks.

Vehicle Fitment:

1947-1964 Harley Davidson FL
1953-1964 Harley Davidson FLF
1965-1969 Harley Davidson FLFB Electra Glide
1958-1964 Harley Davidson FLH Duo-Glide
1970-1985 Harley Davidson FLH Electra Glide
1955-1957 Harley Davidson FLH Hydra-Glide
1965-1969 Harley Davidson FLHB Electra Glide
1979-1981 Harley Davidson FLHC Electra Glide Classic
1955-1964 Harley Davidson FLHF
1970-1972 Harley Davidson FLHF
1965-1969 Harley Davidson FLHFB Electra Glide
1994-2013 Harley Davidson FLHR Road King
2007-2013 Harley Davidson FLHRC Road King Classic
1998-2006 Harley Davidson FLHRCI Road King Classic
1996-1997 Harley Davidson FLHRI Road King
2000-2006 Harley Davidson FLHRI Road King
2004-2007 Harley Davidson FLHRS Road King Custom
2004-2006 Harley Davidson FLHRSI Road King Custom
1980-1981 Harley Davidson FLHS Electra Glide Sport
1984 Harley Davidson FLHS Electra Glide Sport
1987-1993 Harley Davidson FLHS Electra Glide Sport
1986-1987 Harley Davidson FLHT Electra Glide Standard
1995-2001 Harley Davidson FLHT Electra Glide Standard
2006-2009 Harley Davidson FLHT Electra Glide Standard
1983-2001 Harley Davidson FLHTC Electra Glide Classic
2007-2013 Harley Davidson FLHTC Electra Glide Classic
1996-2001 Harley Davidson FLHTCI Electra Glide Classic
2006 Harley Davidson FLHTCI Electra Glide Classic
1989-1997 Harley Davidson FLHTCU Electra Glide Ultra Classic
2007-2013 Harley Davidson FLHTCU Electra Glide Ultra Classic
1995-2001 Harley Davidson FLHTCUI Electra Glide Ultra Classic
2006 Harley Davidson FLHTCUI Electra Glide Ultra Classic
2006 Harley Davidson FLHTI Electra Glide Standard
2010-2013 Harley Davidson FLHTK Electra Glide Ultra Limited
1984-1985 Harley Davidson FLHX Electra Glide Special
2006-2013 Harley Davidson FLHX Street Glide
2006 Harley Davidson FLHXI Street Glide
2012-2017 Harley Davidson FLS Softail Slim
1986-1990 Harley Davidson FLST Heritage Softail
2006 Harley Davidson FLST Heritage Softail
1988-2017 Harley Davidson FLSTC Heritage Softail Classic
2001-2006 Harley Davidson FLSTCI Heritage Softail Classic
1990-2017 Harley Davidson FLSTF Fat Boy
2010-2016 Harley Davidson FLSTFB Fat Boy Lo
2001-2006 Harley Davidson FLSTFI Fat Boy
2006 Harley Davidson FLSTI Heritage Softail
1993 Harley Davidson FLSTN Heritage Softail Nostalgia
1994-1996 Harley Davidson FLSTN Heritage Softail Special
2005-2017 Harley Davidson FLSTN Softail Deluxe
2005-2006 Harley Davidson FLSTNI Softail Deluxe
1980-1983 Harley Davidson FLT Tour Glide
1981-1991 Harley Davidson FLTC Tour Glide Classic
1989-1995 Harley Davidson FLTCU Tour Glide Ultra Classic
1996 Harley Davidson FLTCUI Tour Glide Ultra Classic
1998-2001 Harley Davidson FLTR Road Glide
2007-2009 Harley Davidson FLTR Road Glide
1998-2001 Harley Davidson FLTRI Road Glide
2006 Harley Davidson FLTRI Road Glide
2011-2013 Harley Davidson FLTRU Road Glide Ultra
2010-2013 Harley Davidson FLTRX Road Glide Custom
1993-2005 Harley Davidson FXDWG Dyna Wide Glide
2004-2005 Harley Davidson FXDWGI Dyna Wide Glide
1984-1990 Harley Davidson FXST Softail Standard
1999-2007 Harley Davidson FXST Softail Standard
1999-2009 Harley Davidson FXSTB Night Train
2001-2006 Harley Davidson FXSTBI Night Train
1986-1999 Harley Davidson FXSTC Softail Custom
2007-2010 Harley Davidson FXSTC Softail Custom
2000-2007 Harley Davidson FXSTD Softail Deuce
2001-2006 Harley Davidson FXSTDI Softail Deuce
2001-2006 Harley Davidson FXSTI Softail Standard
1980-1986 Harley Davidson FXWG Wide Glide