DK Custom Products

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

Monotube Fork Cartridge System- Harley Sportster, Softail & Touring

Availability: In stock
Item #: DK-PRG-MT-CTG-1
Manufacturer: Progressive Suspension

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DK Custom Front Suspension - Progressive Monotube Fork Cartridge System- Harley Sportster, Dyna & Softail More Comfortable Ride suspension

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Sportster ~ Softail ~ Touring




Features & Specs:

  • Progressive Rate Springs
  • Gas Charged Damper Cartridges
  • Improved Stability & Control
  • Improved Lean Angle
  • Reduced Brake Dive and Bottoming
  • Includes Spacers for Sag Adjustment
  • Lifetime Warranty
  • Replaces all stock Internals
  • Includes Step-by-Step 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 let us know the year and exactly what Model HD you have, so we can send you the correct Monotube Cartridge System for your bike.


This Standard Progressive Monotube Cartridge System replaces all the internals of the stock forks. The result is a very nice improvement in-

Cornering, small & large bump absorption, reduced brake dive and overall stability and road feel.



2004-2014 Sportster Models 

Does NOT fit 2016-UP 48 Sportster Models (see HERE for 2016-UP Sportster Models)

2000-2014 Softail Models

1984-2013 Touring Models

2008-2013 Tri Glide Models


It is necessary to change the fork fluid when installing these Monotube Cartridges.  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- 1 liter of 10 Weight

Dyna & Softail - 1 liter of 15 weight


 You can see our grading of these Standard Monotubes & 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.


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