Progressive Heavy Duty Front Fork Springs | Rate: 45 lbs/in-65 lbs/in (11-1546)
- Heavy-duty version of the Progressive Suspension fork springs
- The cost-effective go-to for a substantial increase in front-end ride quality
- Includes 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
| Compatible Vehicles | |||
| Years | Make | Make | Notes |
| 2016-2017 | Harley-Davidson | Breakout FXSB | |
| 2008-2017 | Harley-Davidson | Dyna Fat Bob FXDF | |
| 2006 | Harley-Davidson | Dyna Low Rider EFI FXDLI | |
| 2007-2009 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2014-2017 | Harley-Davidson | Dyna Low Rider FXDL | |
| 2006 | Harley-Davidson | Dyna Street Bob EFI FXDBI | |
| 2007-2017 | Harley-Davidson | Dyna Street Bob FXDB | |
| 2006 | Harley-Davidson | Dyna Super Glide 35th Anniversary FXD | |
| 2006 | Harley-Davidson | Dyna Super Glide Custom EFI FXDCI | |
| 2007-2014 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2006 | Harley-Davidson | Dyna Super Glide EFI FXDI | |
| 2007-2010 | Harley-Davidson | Dyna Super Glide FXD | |
| 2006 | Harley-Davidson | Dyna Wide Glide EFI FXDWGI | |
| 2007-2008 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2010-2017 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2007-2011 | Harley-Davidson | Night Rod Special VRSCDX | |
| 2006-2008 | Harley-Davidson | Night Rod VRSCD | |
| 2008-2011 | Harley-Davidson | Rocker C FXCWC | |
| 2008-2009 | Harley-Davidson | Rocker FXCW | |
| 2002-2006 | Harley-Davidson | V-Rod VRSCA | |
| 2007-2010 | Harley-Davidson | V-Rod VRSCAW | |
| 2005 | Harley-Davidson | V-Rod VRSCB | |
| 2007 | Harley-Davidson | V-Rod VRSCX | |