DK Custom Products

Phone: 662.252.8828
Text: 662.420.4891
Email: [email protected]

Front Suspension - Progressive Fork Spring Kit Harley-Davidson

Availability: In stock
Manufacturer: Progressive Suspension

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DK Custom Front Suspension - Progressive Fork Spring Kit Harley-Davidson More Comfortable Ride suspension

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Sportster ~ Dyna ~ Softail ~ Touring ~ Trike



Features & Specs:

  • Progressive Rate Spring
  • High Quality Chrome Silicone Wire
  • Precision Wound
  • Plush Ride
  • Improved Lean Angle
  • Includes Spacers for Sag Adjustment
  • Lifetime Warranty
  • Straight-Forward Install-Comes with Instructions


DK Custom Products has tested numerous aftermarket suspension components.  We've logged well over 16,000 miles on a variety of bikes and trikes, covering an array of road condtions, loads and speeds.   All this, while paying close attention to the ride quality with various suspension configurations.

You can view our full report on our testing of various suspension components at this LINK.


 When you order you will be asked a few easy questions.  Your answers give us the information needed to send you the correct springs for your bike/weight/riding preferences.


These Progressive Rate Fork Springs soak up the small road bumps, yet are firm enough to absorb the big ones.

Spring rates have been chosen to reduce front end "dive" during braking, yet still provide excellent ride comfort.

The benefit of this is that the spring can be soft enough at the start of the travel to offer a "plush" ride, yet be firm enough at the end of the travel to soak up the big bumps. 


1983-Up Sportster Models

1993-Up Dyna Models

1984-Up Softail Models

2002-Up Touring Models

2009-Up Trike Models

All Trikes & 2014-Up Touring Models are an extra $12.95 (if you have one of these models, please check the box when ordering)


It is not necessary to change the fork fluid when installing these springs.  However, it will improve the ride quality.   We recommend Maxima Racing Formula Fork Fluid. 

Fork fluid is something you can get locally, or use the option to add it to your order.

Sportsters- 2 liters of 10 Weight

Dyna, Softail, Touring & Trikes- 2 liters of 15 weight

Important Note: If you are ordering fork fluid AND you add the Intiminators to your order, the special valving in them requires a specific weight of Fork Fluid for them to work properly.  We will send either 5 weight or 10 weight, whichever is correct for your specific bike.


All suspension that is upgraded with springs will ride even better with the addition of the Intiminator Fork Valve System.  You can read more on them HERE.  You can see our grading of springs & other suspension components HERE.


Save $ with a Special Package

See Stage I, II, & III Total Suspension Upgrades HERE.


*Special package pricing is available only when purchased via the Stage I, II or III upgrades at the above link.  Applying the savings After ordering the components individually actually costs us more $, so no additional savings are available after the fact. 



" I like the feel of the Progressive Springs much better than the stock springs.  I also like them better than the straight rate springs, that are a little stiffer.  The plush ride is worth it for giving up a little bit of the road feel.

Coupled with the Intiminator Fork Valves, they are the best value for the $ on my Sportster & Softail!"-Kevin

Customer Reviews

Huge upgrade for a 2018 FreeWheeler Review by Taz
This is a well thought out and executed product. If you want to take a FW up a few notches to where it should’ve come from the factory, install the comfort lift rear, progressive front springs with Intimidators. Adds safety and a much nicer riding experience. Thank you for all the great videos. (Posted on 12/12/2022)
Outstanding Review by JK78
Been riding Harley’s for a while, also doing a lot of two up. These springs with the intimidators are great! Buy them now and don’t wait. Customer service with DK is bar none. I will be buying more parts for sure. Brake dive is gone! (Posted on 8/30/2022)
Awesome ride and service Review by RKing
After talking to DK about how bad the front suspension was they recommended Progressive std springs to meet my wants and were they right. I have purchased a number of products they sell and have not ever been disappointed. I wouldn’t hesitate buying from them at all. (Posted on 8/30/2022)
The first Money spent on Front suspension Review by Brian
Pulled out the embarrassingly wimpy looking springs out of my 2020 Road King, and installed these. My thought is if you aren't going to install $1000+ cartilages, then you better start with these springs, and you dont really need to worry about reliability or durability of this mod. I also added the Intiminators.. the Front end is riding like it should now. Its a rather good investment (Posted on 8/23/2022)

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