Progressive 444 Series Motorcycle Heavy Duty Black 12.5" Rear Shocks (444-4048B)
- Feature the all-new Frequency Sensing Technology (FST) which allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality
- Deflective disc valving
- Adjust spring preload by hand, no special tool needed
- Include a progressive rate spring and is high-pressure gas charged for consistent performance
- Sold in pairs
- Made in the U.S.A.
NOTE: A shock which is slightly longer than stock may alter the head angle slightly and provide somewhat quicker steering.
NOTE: A shock which is slightly shorter than stock may slightly alter the head angle and provide somewhat slower steering.
NOTE: Heavy duty applications are recommended for bikes operating at or near the manufacturer's maximum load rating over 50% of the time.
NOTE: Before purchasing or attempting to install shocks that are different than the OEM length, confirm that your wheel travel can be altered without causing clearance issues, such as swingarm/axle to exhaust contact as well as chain/belt guard or tire contact.
| Compatible Vehicles | |||
| Years | Make | Model | Notes |
| 1983 | Harley-Davidson | Disc Glide FXDG | |
| 1994-2000 | Harley-Davidson | Dyna Convertible FXDS-Conv | |
| 1992 | Harley-Davidson | Dyna Daytona FXDB-D | |
| 2008-2017 | Harley-Davidson | Dyna Fat Bob FXDF | |
| 1992 | Harley-Davidson | Dyna Glide Custom FXDC | |
| 2004-2006 | Harley-Davidson | Dyna Low Rider EFI FXDLI | |
| 1993-2005 | Harley-Davidson | Dyna Low Rider FXDL | |
| 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 | |
| 1991 | Harley-Davidson | Dyna Sturgis FXDB | |
| 2006 | Harley-Davidson | Dyna Super Glide 35th Anniversary FXD | |
| 2005-2006 | Harley-Davidson | Dyna Super Glide Custom EFI FXDCI | |
| 2005 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2007-2014 | Harley-Davidson | Dyna Super Glide Custom FXDC | |
| 2004-2006 | Harley-Davidson | Dyna Super Glide EFI FXDI | |
| 1995-2005 | Harley-Davidson | Dyna Super Glide FXD | |
| 2007-2010 | Harley-Davidson | Dyna Super Glide FXD | |
| 2004-2005 | Harley-Davidson | Dyna Super Glide Sport EFI FXDXI | |
| 1999-2005 | Harley-Davidson | Dyna Super Glide Sport FXDX | |
| 2001-2003 | Harley-Davidson | Dyna Super Glide T-Sport FXDX-T | |
| 2004-2006 | Harley-Davidson | Dyna Wide Glide EFI FXDWGI | |
| 1993-2005 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2007-2008 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 2010-2017 | Harley-Davidson | Dyna Wide Glide FXDWG | |
| 1979-1981 | Harley-Davidson | Electra Glide Classic FLHC | |
| 1973-1985 | Harley-Davidson | Electra Glide FLH | |
| 1984-1985 | Harley-Davidson | Electra Glide FLHX | |
| 1980-1981 | Harley-Davidson | Electra Glide Sport FLHS | |
| 1984 | Harley-Davidson | Electra Glide Sport FLHS | |
| 1979-1981 | Harley-Davidson | Fat Bob FXEF | |
| 1977-1982 | Harley-Davidson | Low Rider FXS | |
| 1983-1985 | Harley-Davidson | Low Rider FXSB | |
| 1980-1982 | Harley-Davidson | Sturgis FXB | |
| 1974-1984 | Harley-Davidson | Super Glide Electric Start FXE | |
| 1985 | Harley-Davidson | Super Glide FatBob FXEF | |
| 1973-1978 | Harley-Davidson | Super Glide FX | |
| 1980-1986 | Harley-Davidson | Wide Glide FXWG | |