DK Custom Products

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

DK Custom NEXGEN™ 13" Trike Series Shocks™ For Harley Davidson Trikes

Availability: In stock
Item #: DK-NG-TSS-13
Manufacturer: DK Custom Products

* Required Fields

Characters left: 100

Characters left: 100

Characters left: 100

Characters left: 100

Characters left: 100

Characters left: 100

Characters left: 100


DK Custom Products NexGen 13" Shocks Trike Harley Tri Glide Freewheeler Pro Action Ohlins Legends Comfort Lift Trike Series Shocks





For Harley-Davidson



Features & Specs:

  • Patented IAS Technology Inside (details below)
  • CNC machined T6061 aircraft quality billet aluminum
  • 3 stage Dynamically adjusting compression valving
  • 2 Separate Rebound Circuits (IAS)
  • Separated Oil/Nitrogen System 
  • Internal Reservoir
  • Hard coat anodized
  • 9 port high flow piston
  • 13" Shocks - 4" of travel  
  • Hand adjustable threaded spring pre load adjuster
  • Stainless steel spherical bearings in shock eyes 
  • Sold as a Pair
  • Increased stability in turns (rides "flatter")
  • Increased cornering ability
  • Reduced brake dive (due to IAS Damping in rear shocks)
  • Smoother riding over the bumps
  • Faster braking (better contact patch)
  • Less wallowing in turns
  • Less harshness over bumps
  • Reduced bottoming out
  • Better Trike control
  • Developed & Manufactured by DK Custom
  • Easy Installation
  • Limited Lifetime Warranty


IAS Inside.  Inertia Active Suspension is a patented technology.  These NEXGEN™ Shocks dynamically adjust rebound damping, resulting in improved riding comfort & control. 

This is achieved via a motion sensing valve in the shock body that dynamically adjusts the rebound damping to be ideal for both dips and bumps.

Custom Tuned to Your Trike & Your Riding Style/Loads


Conceived, Designed, Tested & Built by DK Custom Products, these 13" NEXGEN™ Trike Series Shocks™

Provide a Superior Ride Quality for Harley-Davidson Trikes.

Even though these are the factory Length of 13", they have an innovative 4" of Travel, PLUS Dynamic Auto-Adjusting Damping! 


DK Custom Products has been at the forefront of developing suspension solutions for Harley Trikes.  We were the first to come up with the idea of a 14" shock for the additional travel on HD Trikes, and NOW we have developed a way to Get the Same 4" of Travel from an OEM length 13" shock!  


MORE About The Patented IAS Technology: Normally shocks have 1 circuit for for compression & rebound damping.  Within this damping circuit are "shim stacks" that provide pressure sensitive adjustment to the damping.   Because it is one circuit for both, it is always a compromise.

These shocks have TWO Completely different circuits (valving) for Dynamic auto-adjusting rebound damping. 

By having one pressure sensitive circuit for bumps in the road, and Another damping circuit for dips in the road, the damping works exceptionally well.  Each damping circuit is set up to optimally, and automatically adjust the damping to the road surfaces, acceleration, braking, load (weight) on the Trike.


  • With 4" of Travel, afforded by these Shocks, the ability to eat up small and large irregularities, turning the harshest jolt into a smooth dip is a joy to ride.
  • No More Having to Adjust the Damping for different conditions, They Dynamically adjust for load and road conditions.
  • These Trike Series Shocks™ are 13 inches tall and can be used With or Without the DK Custom Convertible Comfort™ Lift brackets.
    • When you order you will be asked some easy questions.  Your answers give us the information needed to use the correct spring rate for your shocks, as well as giving us the info needed to adjust the shocks for you.  This way when you receive the shocks they are already set-up for you.  Simply bolt them on and ride! 



Fits all 2009-Up Harley-Davidson Trikes (Tri Glide, Freewheeler, Road Glide 3, FLHXXX) 

These are OEM Length of 13" and can be run WITH or WITHOUT the Convertible Comfort Lift™ Kit!

Click HERE to see details on the Convertible Comfort Lift™

IMPORTANT FITMENT NOTE: The 13" NexGen™ Trike Series Shocks, along with the Convertible Comfort Lift™ (or other brand lift kits) are the preferred installation on 2017 & up Harley Trikes.  You can see them at this LINK


Attention 2019 - UP HD Trikes:
These model years are already as high in the rear as they can go. A Lift Kit will Not make them ride higher.


This is because the OEM shocks have no sag in them.
When switching to a quality shock, like the NexGen 13" w/ a Convertible Comfort Lift, they will sit at the same, or a bit higher than OEM when no one is sitting on them.
However, once the rider, passenger & luggage are on the Trike, they will sit a little lower than OEM.
This is because the OEM shocks are too stiff.
To see a full understanding of How & Why this works, see this video.



 Click HERE to See Our Rear Shocks Comparison Report. 


Limited Life Time Warranty Details:

For the original purchaser of the shocks
Does not cover accidents, fire, environmental catastrophes (submerged in a flood, etc.) 
Does not cover if the shocks were abused (overloading them), improper installation
If they are installed properly, not overloaded, not damaged by some external force, then they are Lifetime shocks for the original purchaser....if they wear out, they will be rebuilt/replaced  at no charge.


"These Trike Series Shocks are a Breakthrough in Shock Technology.  The Ride Quality is Better than any other option.  They are easy to install, and the Dynamically adjusting damping makes for a Superior Ride Quality." Kevin






Understanding the How and Why's of Rear Tire Pressure on Trikes.


Lehman Trikes Correct Tire Pressure

Customer Reviews

You need these! Review by Scipio Africanus
The ride is at least a 50% upgrade over the stock air shocks. If your looking for 100% improvement your in a dream world. Never gonna happen with a solid axle.The 10 mile one way circuit I use for testing upgrades consists of 2 lane winding back roads and 4 lane freeway, about 20 miles. Bumps that would jar the fillings out of my teeth now with these NexGen shocks are much more tolerable. It feels like a longer duration if that makes any sense. On installation- if you have tiny Hobbit hands you can pull it off but I removed the body from my Freewheeler. Less swear words. Besides it was time for a good cleaning anyway. Are these shocks worth the money? I'd say yes. (Posted on 12/6/2023)
2021 tri glide ultra Review by Harry
To anyone,is thinking of upgrading,the nexgen 13 inch shocks work great,the hard bumps,like 2 to 3 inch are dull ,instead of bone garing up the spine,I went on a 400 mile trip to test these shocks out with a passenger,and it was really nice to enjoy the ride,I did try to adjust the original harley shocks all the way down to number 2 setting and air pressure in rear tires from 26 down to 24 psi,but it didn’t matter.I talked with Dwayne,about putting these shocks on my trike,he explained how they would greatly improve my ride,great customer support,and fast shipping ,thank you ,Harry (Posted on 6/28/2023)

Product Tags

Use spaces to separate tags. Use single quotes (') for phrases.