DK Custom Products

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DK Custom NEXGEN™ Premium Rear Shocks For Harley Davidson Dyna

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

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DK Custom Products NexGen 12" 13" Shocks Dyna Harley Davidson Pro Action Ohlins Legends Dyna 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
  • 12" & 13" Shocks  
  • Hand adjustable threaded spring pre load adjuster
  • Stainless steel spherical bearings in shock eyes 
  • Sold as a Pair
  • Increased stability in Curves 
  • 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 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 Bike & Your Riding Style/Loads


  • These Shocks were over a YEAR in Development, with thousands of miles of R&D.  We worked until we developed a shock that gives a Better Ride Quality than any other shocks we have tested.
  • The Innovative Extra Travel, And the Dynamic Auto-Adjusting Damping, are what set these shock apart.
  • No More Having to Adjust the Damping for different conditions, they Dynamically adjust for load and road conditions.


Click HERE to See Our Rear Shocks Comparison Report.


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 bike.


  • With More 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.
  • These Premium NEXGEN™ Shocks are available in 2 lengths: 12" & 13".  The travel is an innovative 3" and 3.5" respectively.
  • 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 1993-Up Harley-Davidson Dyna Models

FXR Owners- These do not fit the FXR mount point. 


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 Next Generation Shocks ride better than any other shocks I've used, and I've tried all the big names.  My ride time has gotten less and less because of disc problems.  That is no longer the case.  These are Much smoother.  Thank you DK for always trying to improve.  I can now ride without pain." -Carl






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