944 Ultra Low Shocks — 11" ride height, 318 mm (12.50"), Heavy Duty, Black

PROGRESSIVE SUSPENSION 944 Ultra Low Shocks — 11" ride height, 318 mm (12.50"), Heavy Duty, Black – 80, 83-85 Big Twin, 80, 83-98, 01-02, 04, 10, 21, 23-25 Touring, 00-04, 06-07, 13, 24-25 CVO

PROGRESSIVE SUSPENSION
1310-2453
944-4027UL
  • Frequency Sensing Technology (FST) adjusts damping to match bumps.
  • Hand-adjustable spring preload; no special tools required.
  • Springs tuned for touring use.
  • Three load capacities: up to 250 lb, 250–350 lb, 350+ lb.
  • Sits 2” lower on most models; 11” ride height.
  • Made in the USA.
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Frequency Sensing Technology (FST) senses bump frequency and automatically adjusts damping for superior ride quality. ⚙️

Spring preload is adjustable by hand, no special tools required. 🔧

Main springs are tuned for long-distance touring to deliver smooth, controlled performance. 🛣️

Available in three load capacities: up to 250 lb, 250–350 lb, and 350+ lb to suit rider weight and luggage.

Sits 2” lower on most models and provides an 11” ride height; confirm wheel travel and clearances before installation to avoid exhaust, chain/belt guard, or tire contact. 📝

Made in the USA. 🇺🇸

: 1310-2453
In Stock

Data sheet

Type
Coilover Monotube
Units
Pair
Color/Finish
Black, Gold
Brand
PROGRESSIVE SUSPENSION
Duty
Heavy Duty
Damping Method
Gas Charged
Reservoir Location
Internal
Spring Type
Single Progressive Rate
Extended Length
318,00 mm (12,50")
Material
Aluminum
Harley Family
CVO
Touring
Vintage Big Twin

This product fits the following vehicles. Use the filters below to narrow down the list if needed.

Manufacturer Model Family Year Notes
Harley Davidson Electra Glide Standard Big Twin 1984
Harley Davidson Electra Glide Standard Big Twin 1985
Harley Davidson Electra Glide Big Twin 1980
Harley Davidson Electra Glide Big Twin 1983
Harley Davidson Electra Glide Revival 114 Touring 2021
Harley Davidson Electra Glide Highway King 114 Touring 2023
Harley Davidson Road King Touring 1994
Harley Davidson Road King Touring 1995
Harley Davidson Road King Touring 1996
Harley Davidson Road King Classic Touring 2004
Harley Davidson Road King Classic Touring 1998
Harley Davidson Road King Touring 1996
Harley Davidson Road King Touring 1997
Harley Davidson Road King Touring 2001
Harley Davidson Road King Touring 2002
Harley Davidson Road King Screamin Eagle CVO 2007
Harley Davidson Road King CVO 110th Anniversary CVO 2013
Harley Davidson Road King Screamin Eagle CVO 2002
Harley Davidson Road King Screamin Eagle CVO 2003
Harley Davidson Road King Special 114 Touring 2025
Harley Davidson Electra Glide Sport Touring 1980
Harley Davidson Electra Glide Sport Touring 1987
Harley Davidson Electra Glide Sport Touring 1988
Harley Davidson Electra Glide Sport Touring 1989
Harley Davidson Electra Glide Sport Touring 1990
Harley Davidson Electra Glide Sport Touring 1991
Harley Davidson Electra Glide Sport Touring 1992
Harley Davidson Electra Glide Sport Touring 1993
Harley Davidson Electra Glide Sport Touring 1994
Harley Davidson Electra Glide Touring 1983
Harley Davidson Electra Glide Touring 1984
Harley Davidson Electra Glide Touring 1986
Harley Davidson Electra Glide Touring 1987
Harley Davidson Electra Glide Touring 1988
Harley Davidson Electra Glide Standard Touring 1995
Harley Davidson Electra Glide Standard Touring 1996
Harley Davidson Electra Glide Standard Touring 1998
Harley Davidson Electra Glide Touring 2010
Harley Davidson Electra Glide Classic Touring 1983
Harley Davidson Electra Glide Classic Touring 1984
Harley Davidson Electra Glide Classic Touring 1985
Harley Davidson Electra Glide Classic Touring 1986
Harley Davidson Electra Glide Classic Touring 1987
Harley Davidson Electra Glide Classic Touring 1988
Harley Davidson Electra Glide Classic Touring 1989
Harley Davidson Electra Glide Classic Touring 1990
Harley Davidson Electra Glide Classic Touring 1991
Harley Davidson Electra Glide Classic Touring 1992
Harley Davidson Electra Glide Classic Touring 1993
Harley Davidson Electra Glide Classic Touring 1994
Harley Davidson Electra Glide Classic Touring 1995
Harley Davidson Electra Glide Classic Touring 1998
Harley Davidson Electra Glide Classic Touring 1996
Harley Davidson Electra Glide Classic Touring 1997
Harley Davidson Electra Glide Classic Touring 1998
Harley Davidson Electra Glide Screamin Eagle CVO 2004
Harley Davidson Electra Glide Ultra Classic Touring 1989
Harley Davidson Electra Glide Ultra Classic Touring 1990
Harley Davidson Electra Glide Ultra Classic Touring 1991
Harley Davidson Electra Glide Ultra Classic Touring 1992
Harley Davidson Electra Glide Ultra Classic Touring 1993
Harley Davidson Electra Glide Ultra Classic Touring 1994
Harley Davidson Electra Glide Ultra Classic Touring 1995
Harley Davidson Electra Glide Ultra Classic Touring 1996
Harley Davidson Electra Glide Ultra Classic Special Anniversary Edition Touring 1995
Harley Davidson Electra Glide Ultra Classic Touring 1996
Harley Davidson Electra Glide Ultra Classic Touring 1997
Harley Davidson Electra Glide Ultra Classic Screamin Eagle CVO 2006
Harley Davidson Electra Glide Ultra Classic Screamin Eagle CVO 2007
Harley Davidson Electra Glide Classic Touring 1984
Harley Davidson Electra Glide Special Touring 1984
Harley Davidson Electra Glide Special Touring 1985
Harley Davidson Street Glide 117 Touring 2024
Harley Davidson Street Glide 117 Touring 2025
Harley Davidson Street Glide CVO 121 CVO 2024
Harley Davidson Street Glide CVO 121 CVO 2025
Harley Davidson Street Glide Ultra 121 Touring 2025
Harley Davidson Tour Glide Touring 1984
Harley Davidson Tour Glide Classic Touring 1983
Harley Davidson Tour Glide Classic Touring 1984
Harley Davidson Tour Glide Classic Touring 1985
Harley Davidson Tour Glide Classic Touring 1986
Harley Davidson Tour Glide Classic Touring 1987
Harley Davidson Tour Glide Classic Touring 1988
Harley Davidson Tour Glide Classic Touring 1989
Harley Davidson Tour Glide Classic Touring 1990
Harley Davidson Tour Glide Classic Touring 1991
Harley Davidson Tour Glide Ultra Classic Touring 1989
Harley Davidson Tour Glide Ultra Classic Touring 1990
Harley Davidson Tour Glide Ultra Classic Touring 1991
Harley Davidson Tour Glide Ultra Classic Touring 1992
Harley Davidson Tour Glide Ultra Classic Touring 1993
Harley Davidson Tour Glide Ultra Classic Touring 1994
Harley Davidson Tour Glide Ultra Classic Touring 1995
Harley Davidson Tour Glide Ultra Classic Touring 1996
Harley Davidson Road Glide Touring 1998
Harley Davidson Road Glide Screamin Eagle CVO 2000
Harley Davidson Road Glide Screamin Eagle CVO 2001
Harley Davidson Road Glide 117 Touring 2024
Harley Davidson Road Glide 117 Touring 2025
Harley Davidson Road Glide CVO 121 CVO 2025
Harley Davidson Road Glide ST CVO 121 CVO 2024
Harley Davidson Road Glide ST CVO 121 CVO 2025