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Progressive Heavy Duty Fork Springs For Harley Big Twin 1978-2016
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Progressive Suspension Heavy Duty Fork Springs For Harley Big Twin

The heavy-duty progressive-rate fork springs soak up small road bumps, yet are firm enough to absorb the ones that shake the kidneys. Spring rates have been chosen to reduce front end dive during braking, yet still provide excellent ride comfort, and also balance the weight of a bike laden with greater-than-average loads. A progressive-rate spring has the advantage of a resistance to compression that rises as the spring is being compressed - it gets tougher to compress as it is compressed. The benefit of this is that the spring can be soft enough at the start of the travel to offer a plush ride, yet be firm enough at the end of the travel to soak up the big bumps.


  • Progressive spring rate
  • High-quality chrome-silicon wire
  • Precision wound
  • Made in USA

Note: Spacers are not included.

Fitment Notes & Exceptions

  • Changing ride height can potentially change many carefully-engineered attributes of your bike, including trail and mechanical trail
  • A change in ride height at one end of the vehicle usually will require a change at the other end
  • Heavy Duty shocks are recommended for bikes operated at or near the OEM maximum load rating over 50% of the time
  • Prior to purchasing springs that are different than your OEM length, please verify that wheel and suspension travel can be altered without causing clearance issues - common interference spots include triple trees, fenders, frame, and of course, the ground.
  • Not for use with Trike models (FLHTCUTG, FLHXXX)
This Product Fits:
Harley Davidson
Bad Boy FXSTSB 1995, 1996, 1997
Breakout CVO/SE FXSBSE 2013
Breakout FXSB 2013
Cross Bones FLSTSB 2008, 2009, 2010, 2011
Dyna Wide Glide FXDWG/I 19932005
Electra Glide Classic FLHC 1980, 1981, 1982
Electra Glide Classic FLHTC/I 19832013
Electra Glide CVO/SE FLHTCSE 2004
Electra Glide CVO/SE FLHTCSE2 2005
Electra Glide Special FLHX 1984
Electra Glide Sport FLHS 19801984, 19871993
Electra Glide Standard FLHT/I 19832009
Electra Glide Ultra Classic FLHTCU/I 19872013
Electra Glide Ultra Limited FLHTK 2010, 2011, 2012, 2013
Fat Boy CVO/SE FLSTFSE2 2006
Fat Boy FLSTF/I 19902016
Fat Boy Lo FLSTFB 20092016
Fat Boy S FLSTFBS 2016
FLH 19781985
FLSTSE2 CVO/SE Softail Convertible 2011
FLSTSE CVO/SE Softail Convertible 2010
FXDWG2 2001
FXDWG3 2002
Heritage Softail Classic FLSTC/I 19862016
Heritage Softail FLST/I 19861990, 2006
Heritage Springer FLSTS/I 19972003
Night Train FXSTB/I 19992009
Road Glide Custom FLTRX 2010, 2011, 2012, 2013
Road Glide CVO/SE FLTRSE3 2009
Road Glide CVO/SE FLTRSEI 2009
Road Glide CVO/SE FLTRSEI2 2001
Road Glide CVO/SE FLTRXSE 2012, 2013
Road Glide FLTR/I 19982009
Road Glide Ultra CVO/SE FLTRUSE 2011
Road Glide Ultra FLTRU 2011, 2012, 2013
Road King Classic FLHRC/I 19942013
Road King Custom FLHRS/I 19952012
Road King CVO/SE FLHRSE3 2007
Road King CVO/SE FLHRSE4 2008
Road King CVO/SE FLHRSE5 2013
Road King CVO/SE FLHRSEI 2002
Road King CVO/SE FLHRSEI2 2003
Road King FLHR/I 19942013
Softail Blackline FXS 2011, 2012, 2013
Softail Convertible CVO/SE FLSTSE3 2012
Softail Custom FXSTC/I 19861999, 20072010
Softail Custom/Nostalgia/Special/Deluxe FLSTN/I 19931996, 20052016
Softail Deuce CVO/SE FXSTDSE 2003
Softail Deuce CVO/SE FXSTDSE2 2004
Softail Deuce FXSTD/I 19992007
Softail Slim FLS 2012, 2013, 2014, 2015, 2016
Softail Slim S FLSS 2016
Softail Springer Classic FLSTSC/I 2005, 2006, 2007
Softail Springer CVO/SE FXSTSSE 2007
Softail Springer CVO/SE FXSTSSE2 2008
Softail Springer CVO/SE FXSTSSE3 2009
Softail Standard FXST/I 19842012
Springer Softail FXSTS/I 19882006
Street Glide CVO/SE FLHXSE 2010
Street Glide CVO/SE FLHXSE2 2011
Street Glide CVO/SE FLHXSE3 2012
Street Glide FLHX/I 20062013
Tour Glide Classic FLTC/I 19801991
Tour Glide FLT 19801991
Tour Glide Ultra Classic FLTCU/I 19891995
Ultra Classic Electra Glide CVO/SE FLHTCUSE 2006
Ultra Classic Electra Glide CVO/SE FLHTCUSE2 2007
Ultra Classic Electra Glide CVO/SE FLHTCUSE3 2008
Ultra Classic Electra Glide CVO/SE FLHTCUSE4 2009
Ultra Classic Electra Glide CVO/SE FLHTCUSE5 2010
Ultra Classic Electra Glide CVO/SE FLHTCUSE6 2011
Ultra Classic Electra Glide CVO/SE FLHTCUSE7 2012
Ultra Classic Electra Glide CVO/SE FLHTCUSE8 2013
Wide Glide FXWG 19801986
Product Style RevZilla Item # Manufacturer Product # Availability
Progressive Heavy Duty Fork Springs For Harley Big Twin 1978-2016 902999 111536 In Stock: Ships within 24 hours


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Progressive Heavy Duty Fork Springs For Harley Big Twin 1978-2016
Already Asked: 1 Question, 2 Answers
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RevZilla Store asked: Why did you choose this?
James J: Suspension improvements Aug 27, 2015
John S: Great price and great info for the fit! Aug 2, 2015