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Progressive Suspension

Progressive 444 Shocks For Harley Dyna 1991-2017

Item: P248364
134 Read 134 Reviews 32 Q&As Write a Review

After more than a decade of ruling the roads with the road proven shocks, Progressive Suspension unveiled another breakthrough design. Dubbed Frequenc… Read More

$781.95
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This product is vehicle specific.
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Product Details

Progressive Suspension  444 Series FST Shocks For Harley Dyna

After more than a decade of ruling the roads with the road proven shocks, Progressive Suspension unveiled another breakthrough design. Dubbed Frequency Sensing Technology (FST) for its unique ability to dynamically adjust damping as you ride. The result is superior performance no matter the road conditions. A top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap.

Features:

  • Frequency Sensing Technology (FST) allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality
  • Adjust spring pre-load by hand - no special tool needed
  • Progressive-rate spring
  • Deflective disc valving
  • Sold as a pair
  • Made in USA

Notes:

  • Depending on model, your stock shock length is 12" to 13.3"
  • Shock lengths are measured fully extended, eyelet to eyelet on centers
  • A change in height at one end of the bike may require a change at the other
  • Changing ride height can potentially change the trail and mechanical trail
  • Heavy Duty shocks are recommended for bikes operated at or near the OEM maximum load rating over 50% of the time
  • Prior to purchasing shocks that are different than your OEM length, please verify that wheel and suspension travel can be altered without causing clearance issues to the swingarm, axle, frame, tire, fender, chain/belt and guard, and exhaust
Made in the USA
Product Style RevZilla Item # Store Sku MFR. Product # Availability
Product Style Standard 11 1/2" / Black RevZilla Item #899785 Store Sku MFR. Product #444-4052B AvailabilityOnly 2 Left: Ships within 24 hours
Product Style Standard 11 1/2" / Chrome RevZilla Item #899786 Store Sku MFR. Product #444-4052C AvailabilityOnly 2 Left: Ships within 24 hours
Product Style Standard 12" / Black RevZilla Item #899769 Store Sku MFR. Product #444-4036B AvailabilityIn Stock: Ships next business day
Product Style Standard 12" / Chrome RevZilla Item #899770 Store Sku MFR. Product #444-4036C AvailabilityIn Stock: Ships next business day
Product Style Standard 12 1/2" / Black RevZilla Item #899771 Store Sku MFR. Product #444-4038B AvailabilityOut of Stock: Enter your email address below to be notified when this item is available.
Product Style Standard 12 1/2" / Chrome RevZilla Item #899772 Store Sku MFR. Product #444-4038C AvailabilityOut of Stock: Enter your email address below to be notified when this item is available.
Product Style Standard 13" / Black RevZilla Item #899773 Store Sku MFR. Product #444-4039B AvailabilityOnly 1 Left: Ships next business day
Product Style Standard 13" / Chrome RevZilla Item #899774 Store Sku MFR. Product #444-4039C AvailabilityOnly 3 Left: Ships next business day
Product Style Black / Heavy Duty 11 1/2" RevZilla Item #899787 Store Sku MFR. Product #444-4053B AvailabilityCloseout: This product is no longer available
Product Style Heavy Duty 11 1/2" / Chrome RevZilla Item #899788 Store Sku MFR. Product #444-4053C AvailabilityOnly 2 Left: Ships within 24 hours
Product Style Black / Heavy Duty 12" RevZilla Item #899775 Store Sku MFR. Product #444-4044B AvailabilityOut of Stock: Enter your email address below to be notified when this item is available.
Product Style Heavy Duty 12" / Chrome RevZilla Item #899776 Store Sku MFR. Product #444-4044C AvailabilityOnly 2 Left: Ships next business day
Product Style Black / Heavy Duty 12 1/2" RevZilla Item #899777 Store Sku299445 MFR. Product #444-4048B AvailabilityOut of Stock: Enter your email address below to be notified when this item is available.
Product Style Heavy Duty 12 1/2" / Chrome RevZilla Item #899778 Store Sku MFR. Product #444-4048C AvailabilityIn Stock: Ships within 24 hours
Product Style Black / Heavy Duty 13" RevZilla Item #899783 Store Sku MFR. Product #444-4051B AvailabilityOnly 3 Left: Ships within 24 hours
Product Style Heavy Duty 13" / Chrome RevZilla Item #899784 Store Sku MFR. Product #444-4051C AvailabilityOnly 2 Left: Ships next business day
Please review this product's fitment notes & exceptions prior to purchase: Add to Cart
This product is vehicle specific.
Select a vehicle to ensure fitment.
Fitment Notes & Exceptions
  • Not for Switchback (FLD) models
  • To use the 11.5” shocks on FXDWG models, the fender tip may need to be trimmed or it may contact the belt guard as shown in figure 1 image
  • Prior to purchasing shocks that are different than your OEM length, please verify that wheel and suspension travel can be altered without causing clearance issues to the swingarm, axle, frame, tire, fender, chain/belt and guard, and exhaust
  • Standard Duty for FX, FXWG, FL-FLH (4 speed)
  • Heavy Duty for FXD and FXDWG
This Product Fits
Harley Davidson
Dyna Convertible FXDS 1994-2000
Dyna Fat Bob FXDF 2008-2017
Dyna Glide Custom FXDC 1992
Dyna Glide Daytona FXDB-D 1992
Dyna Glide Sturgis FXDB-S 1991
Dyna Low Rider FXDL/I 1993-2017
Dyna Low Rider S FXDLS 2016, 2017
Dyna Street Bob FXDB/I 2006-2017
Dyna Super Glide Custom FXDC/I 2005-2014
Dyna Super Glide FXD/I 1995-2010
Dyna Super Glide Sport FXDX 1999-2005
Dyna Super Glide Sport Touring FXDXT 2001, 2002, 2003
Dyna Wide Glide FXDWG/I 1993-2017
This item is also available for 58 different vehicles. View All Models
Harley Davidson
Dyna Switchback FLD 2012-2016
Electra Glide Classic FLHTC/I 1984-2013
Electra Glide Special FLHX 1984
Electra Glide Sport FLHS 1984-1993
Electra Glide Standard FLHT 2019-2022
Electra Glide Standard FLHT/I 1984-2009
Electra Glide Ultra Classic FLHTCU/I 1989-2019
Electra Glide Ultra Classic Low FLHTCUL 2015-2016
Electra Glide Ultra Limited FLHTK 2010-2024
Electra Glide Ultra Limited Low FLHTKL 2015-2019
FLH 1984-1985
Freewheeler FLRT 2015-2024
Low Glide/Low Rider FXRS 1987-1993
Low Rider Chrome FXRC 1987-1988
Low Rider Sport FXRS-SP 1987-1993
Road Glide 3 FLTRT 2023-2024
Road Glide Custom FLTRX 2010-2013
Road Glide FLTR/I 1998-2009
Road Glide FLTRX 2015-2023
Road Glide Limited FLTRK 2020-2024
Road Glide Special FLTRXS 2015-2023
Road Glide ST FLTRXST 2022-2023
Road Glide Ultra FLTRU 2011-2019
Road King Classic FLHRC/I 1998-2013
Road King Custom FLHRS/I 2004-2007
Road King FLHR/I 1994-2022
Road King Special FLHRXS 2017-2024
Sport Glide FXRT 1987-1992
Sportster Custom XL1200C 1996-2019
Sportster Custom XL883C 1998-2009
Sportster Deluxe XLH883DLX 1989-1992
Sportster Forty-Eight Special XL1200XS 2018-2019
Sportster Forty-Eight XL1200X 2010-2022
Sportster Hugger XLH883HUG 1988-2003
Sportster Iron XL1200NS 2018-2021
Sportster Iron XL883N 2009-2022
Sportster Low/SuperLow XL883L 2005-2019
Sportster Low XL1200L 2006-2011
Sportster Nightster XL1200N 2007-2012
Sportster Roadster XL1200CX 2016-2020
Sportster Roadster XL1200R 2004-2008
Sportster Roadster XL883R 2002-2012
Sportster Seventy-Two XL1200V 2012-2016
Sportster Sport XL1200S 1996-2003
Sportster SuperLow XL1200T 2014-2017
Sportster XL883 2004-2009
Sportster XLH1100 1986-1987
Sportster XLH1200 1988-2003
Sportster XLH883 1986-2003
Street Glide FLHX/I 2006-2023
Street Glide Special FLHXS 2014-2023
Street Glide ST FLHXST 2022-2023
Street Glide Trike FLHXXX 2010-2011
Tour Glide Classic FLTC/I 1984-1991
Tour Glide FLT 1984-1986
Tour Glide Ultra Classic FLTCU/I 1989-1996
Tri Glide CVO/SE FLHTCUTGSE 2020-2022
Tri Glide Ultra Classic FLHTCUTG 2009-2024
Product Description
Part Numbers
Fitment
134 Customer Reviews
134 4.5/5
32 Questions & 36 Answers
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