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Progressive 444 Series Shocks For Harley Dyna 1991-2016
  • Progressive 444 Series Shocks For Harley Dyna 1991-2016 - Black
  • Progressive 444 Series Shocks For Harley Dyna 1991-2016 - Chrome
  • Progressive 444 Series Shocks For Harley Dyna 1991-2016
  • Progressive 444 Series Shocks For Harley Dyna 1991-2016

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Progressive 444 Series Shocks For Harley Dyna 1991-2016 Videos

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.


  • 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


  • 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

Fitment Notes & Exceptions

  • Not for Switchback (FLD) models
  • To use the 11.5” shocks on FXDWG models, the fender may need to be modified as follows: When the shock is compressed, the belt guard may hit the fender edge (see Figure 1). Trim the fender as shown in Figure 1 inset. After trimming is complete, install shock and compress to verify that belt guard clearance is sufficient.

This Product Fits:
Harley Davidson
Dyna Convertible FXDS 19942000
Dyna Glide Daytona FXDB-D 1992
Dyna Glide Sturgis FXDB-S 1991
Dyna Low Rider FXDL/I 19931997, 19992009, 20142016
Dyna Super Glide FXD/I 19952010
Dyna Super Glide Sport FXDX 19992005
Dyna Super Glide Sport Touring FXDXT 2001, 2002, 2003
Dyna Wide Glide FXDWG/I 19932016
Fat Bob FXDF 20082016
Street Bob FXDB/I 20062016
Super Glide Custom FXDC/I 20052014
Product Style RevZilla Item # Manufacturer Product # Availability
Standard 11 1/2" / Black 899785 4444052B/444-4052B In Stock: Ships within 24 hours
Standard 11 1/2" / Chrome 899786 4444052C/444-4052C Out of Stock
Standard 12" / Black 899769 4444036B/444-4036B In Stock: Ships within 24 hours
Standard 12" / Chrome 899770 4444036C/444-4036C In Stock: Ships within 24 hours
Standard 12 1/2" / Black 899771 4444038B/444-4038B In Stock: Ships within 24 hours
Standard 12 1/2" / Chrome 899772 4444038C/444-4038C Out of Stock
Standard 13" / Black 899773 4444039B/444-4039B In Stock: Ships within 24 hours
Standard 13" / Chrome 899774 444-4039C/4444039C Out of Stock
Heavy Duty 11 1/2" / Black 899787 4444053B In Stock: Ships within 24 hours
Heavy Duty 11 1/2" / Chrome 899788 4444053C Available: Expect 3-4 business days lead time prior to shipment
Heavy Duty 12" / Black 899775 4444044B/444-4044B In Stock: Ships within 24 hours
Heavy Duty 12" / Chrome 899776 4444044C/444-4044C In Stock: Ships within 24 hours
Heavy Duty 12 1/2" / Black 899777 4444048B/444-4048B In Stock: Ships within 24 hours
Heavy Duty 12 1/2" / Chrome 899778 4444048C/444-4048C Out of Stock
Heavy Duty 13" / Black 899783 4444051B/444-4051B In Stock: Ships within 24 hours
Heavy Duty 13" / Chrome 899784 4444051C/444-4051C In Stock: Ships within 24 hours


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Write a Product Review for a chance to win our monthly $100 giveaways.
Progressive 444 Series Shocks For Harley Dyna 1991-2016 5 5 3 3
This product is a big improvement over stock shocks!!! The riding comfort on my 2014 Super Glide has improved remarkably, as well as the handling. No more bottoming out over bumps and speed humps. My spine also thinks these Progresive shocks are great. Lee Forsythe July 27, 2015
Great upgrade from stock I was advised to get the standard 13" 444s after talking to the pros at Progressive customer service, then went straight to Revzilla to buy them. While these do require a lot of trial and error to find your sweet spot (there's no presets or reference points to help you) they are an amazing upgrade from stock. Progressive suggested a sag of 3/4". Even at the lightest setting my sag is 1/2" and I weigh 230 & don't ride with luggage or carry a passenger on the back. So be careful if your'e considering getting the heavy duty 444s you might find them too stiff and unable to adjust to your comfort level. June 29, 2015
Excellent upgrade from stock. These Progressive 444's made a big difference in handling on my 2009 FXDC. Also added Ricor Inertia active vales to the stock front fork. The combination helped turn the cruiser into a competent sports tourer. October 13, 2014
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Have a functionality, fit, or otherwise product-specific question about the Progressive 444 Series Shocks For Harley Dyna 1991-2016? Ask it here! If you have a customer service or shipping question, please direct it to our Customer Service department.

Progressive 444 Series Shocks For Harley Dyna 1991-2016
Already Asked: 3 Questions, 8 Answers
Sort by:
RevZilla Store asked: Why did you choose this?
P D: Outstanding ride, and good looks. Sep 11, 2015
Neil M: To lift my bike and a better quality shock Sep 14, 2014
Clifford B asked: Whats the difference between Standard and Heavy Duty? Apr 5, 2015
Answer this · Send to friends Good question? Yes (0) No (0)
Steven S: Go with heavy duty if you're over 200 lbs, ride two-up a lot, pack heavy, or just want a stiff ride. I'm 150 lbs and got the standards. They're great, a noticeable improvement over stock. Also added Ricor Inertia Active Valves to the stock front springs. 2009 FXDC handles like it should in the twisties and everywhere else!

Steve, Santa Fe, New Mexico
Apr 6, 2015
Reply to Steven Good answer? Yes (1) No (0)
Neil M: I bought the 1 inch longer shocks for my Dyna Fat Bob 2014 middle of last year. Set on the standard setting they are firmer than stock, handle better and are stiff enough to have a tour two up with luggage without adjusting to a stiffer setting. The positive is, no more exhaust scrapping and in combination with shorter front pegs (with a 45deg cut) it can slice through roundabouts etc easy without touching ... just a firmer ride but still acceptable for a cruiser ... in my opinion! I don`t think there was an option of normal or Heavy duty at the time? The bike steers a bit quicker now as well so that a bonus! I hope this helps Apr 6, 2015
Reply to Neil Good answer? Yes (0) No (0)
Anthony S: weigh 250lbs or more solo, or with passenger or with gear more than 505 of the time go with HD, otherwise the standard would great Apr 9, 2015
Reply to Anthony Good answer? Yes (0) No (0)
A shopper asked: I weigh 250 lbs, no 2 up riding and no carrying luggage. Should I get the regular or HD springs ? I'm looking for good handling and a smooth ride. Harry Apr 30, 2014
Answer this · Send to friends Good question? Yes (0) No (0)
Toby F: I weigh 240 and ride a 2014 Street Bob with progressives 444(regular springs ). Ride is great. May 2, 2014
Reply to Toby Good answer? Yes (2) No (0)
Brian K: I weigh about 215 lbs. and don't carry much in terms of gear and only ride solo - the standard rate springs on the 12 inch (stock length for my 2011 FXDB) 444s are fine. When I installed the shocks and measured to adjust for ride sag, it turned out I didn't need to adjust for any preload. I have the recommended 1 inch sag with the collar all the way up (maximum counter clockwise position). Went for a ride right after installing and purposely went over every "imperfection" in the road and never bottomed out and found the suspension to be so much smoother than the stock shocks. Apr 19, 2015
Reply to Brian Good answer? Yes (1) No (0)
James P: I weigh 170 without gear on and little to no 2 up riding and I ride with the hd on the softest settings. It's superior to the factory ride quality still. I would do the hd if I were you. Whenever I upgrade, if I do the progressive specifically the 444, they will be hd as well. May 1, 2014
Reply to James Good answer? Yes (1) No (0)