Ideal for lowered Softails. Stronger than stock springs; prevent bottoming out. Big Red springs are recommended for solo riders; rated for 1200 psi (EU: 8,27 MPa). Big Blue springs are recommended if occasionally carrying a passenger or the rider weight is 220-290 lb. (EU: 99,79 - 131,54 kg) ; rated for 1300 psi (EU: 8,96 MPa). Big Gray springs are for lowered machines that often carry passengers or for the rider whose weight is 300+ lb (EU: 136,08 kg+).; rated for 1400 psi (EU: 9,65 MPa). Fit OEM and Progressive Suspension shock absorbers. Made in the U.S.A..
This Part Fits:
| Year |
Make |
Model |
Submodel |
| 1989-1990 |
Harley-Davidson |
Softail |
FXST |
| 1989-1999,2007-2010 |
Harley-Davidson |
Softail |
Custom FXSTC |
| 1989-2006 |
Harley-Davidson |
Softail Springer |
FXSTS |
| 1995-1997 |
Harley-Davidson |
Bad Boy |
FXSTSB |
| 1999-2007 |
Harley-Davidson |
Softail |
Standard FXST |
| 1999-2009 |
Harley-Davidson |
Night Train |
FXSTB |
| 2000-2007 |
Harley-Davidson |
Softail |
Deuce FXSTD |
| 2001-2006 |
Harley-Davidson |
Night Train |
EFI FXSTBI |
| 2001-2006 |
Harley-Davidson |
Softail |
Deuce EFI FXSTDI |
| 2001-2006 |
Harley-Davidson |
Softail |
Standard EFI FXSTI |
| 2001-2006 |
Harley-Davidson |
Softail Springer |
EFI FXSTSI |
| 2006 |
Harley-Davidson |
Fat Boy |
EFI FLSTFI |
| 2006 |
Harley-Davidson |
Heritage Softail |
Classic EFI FLSTCI |
| 2006 |
Harley-Davidson |
Heritage Softail |
EFI FLSTI |
| 2006 |
Harley-Davidson |
Heritage Softail |
FLST |
| 2006 |
Harley-Davidson |
Softail |
Deluxe EFI FLSTNI |
| 2006 |
Harley-Davidson |
Softail Springer |
Classic EFI FLSTSCI |
| 2006-2007 |
Harley-Davidson |
Softail Springer |
Classic FLSTSC |
| 2006-2017 |
Harley-Davidson |
Fat Boy |
FLSTF |
| 2006-2017 |
Harley-Davidson |
Heritage Softail |
Classic FLSTC |
| 2006-2017 |
Harley-Davidson |
Softail |
Deluxe FLSTN |
| 2008-2011 |
Harley-Davidson |
Cross Bones |
FLSTSB |
| 2010-2016 |
Harley-Davidson |
Fat Boy Lo |
FLSTFB |
| 2012-2017 |
Harley-Davidson |
Softail |
Slim FLS |
