Progressive Suspension Breakthrough Shocks Design With Frequency Sensing Technology.

After more than a decade of ruling the roads with their renowned 440 Series shocks, Progressive Suspension has unveiled another breakthrough design. Dubbed Frequency Sensing Technology (FST) for its unique ability to dynamically adjust damping as you ride. FST is described by their engineering team as like having two sets of shocks on your bike. One set to comfortably and efficiently smooth away those nasty exposed aggregate road surfaces, weather cracks and expansion joints, and a second set to handle the big jobs like drainage dips, speed bumps, bottoming control and cornering stability.

This patent pending technology features frequency sensitive damping circuits which enable the new 444 Series to deliver unsurpassed performance and comfort. The new shocks feature all aluminum body, deflective disc valving, unique FST circuits and progressive rate springs. Like their predecessors, the 444 Series is preload adjustable by turning the top cap and can be easily set up for your weight and riding style. Available in black or chrome as well as standard and heavy duty spring rate and supported with a lifetime limited warranty. Contact your local Progressive Suspension dealer for more information.

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11 Responses to “Progressive Suspension Breakthrough Shocks Design With Frequency Sensing Technology.”


  1. 1 abqhudson Aug 14th, 2012 at 10:32 am

    Do they make one for Victory Motorcycles?

  2. 2 ray c wheeler Aug 14th, 2012 at 11:18 am

    We have the technology….

    Great job Progressive…………….

  3. 3 Progressive Suspension Aug 14th, 2012 at 11:28 am

    abqhudson, depends on the year and model Victory. Take a look at our product search tool and it will give you a list of eaxactly what we make for your bike. http://www.progressivesuspension.com/productsearch.aspx
    Ray, thanks!

    ~PS

  4. 4 Presley Aug 14th, 2012 at 12:40 pm

    Re-building an Ironhead. May try this.

  5. 5 Buster Aug 15th, 2012 at 8:44 am

    Another fine product from Progressive!

  6. 6 Bud Aug 15th, 2012 at 8:58 am

    @ Progressive…When will they be ready to ship?

  7. 7 Progressive Suspension Aug 15th, 2012 at 9:34 am

    @Bud,

    We are shipping now. Should have the pipeline completely filled by next month.

    ~PS

  8. 8 rob Aug 15th, 2012 at 1:45 pm

    How is this different than the IAS technology?

  9. 9 viz Aug 15th, 2012 at 5:24 pm

    So it basically Koni FSD’s for your bike. NICE!!!

  10. 10 Doc Robinson Aug 15th, 2012 at 8:12 pm

    Very cool. Progressive Suspension goes from strength to strength with a great line of shocks.

  11. 11 Bob Smith Aug 21st, 2012 at 12:43 pm

    I heard Öhlins were the way to go!!

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