What is Frequency Sensing Technology (FST)?

Frequency Sensing Technology (FST) is a patented system that allows the shocks to automatically adjust their damping based on the frequency of road impacts. This means the shocks can react differently to small bumps versus larger ones, aiming to provide a more comfortable and controlled ride across various road conditions.

How do I adjust the spring preload on these shocks?

The 444 Series shocks feature a top-mounted threaded preload adjuster. You can fine-tune the spring preload by simply twisting the cap by hand, eliminating the need for special tools.

What is the difference between the spring rate options?

Progressive offers these shocks in different spring rates to suit rider weight and riding style. Standard Weight is for typical rider loads, Heavy-duty is recommended for riders and gear totaling 250 lbs or more, and Super Heavy Duty is specifically for touring models carrying 350 lbs or more.

Progressive Harley 444 Series Shocks 11.5in - Chrome

Specifications

Brand: Progressive
Part #: 444-4060C
UPC: 444-4060C

Progressive Harley 444 Series Shocks 11.5in - Chrome

Name: Progressive Harley 444 Series Shocks 11.5in - Chrome
Brand: Progressive
Price: 860.95 USD
Availability: InStock

$860.95

On Backorder

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Progressive Harley 444 Series Shocks 11.5in - Chrome. Features Frequency Sensing Technology for an improved, comfortable ride.

Key Features

Fits a wide range of Harley-Davidson models, including Electra Glide, Road King, and Street Glide.
Features patented Frequency Sensing Technology (FST) that automatically adjusts damping for improved ride comfort.
Progressive rate spring offers a balanced feel, providing comfort on small bumps and support on larger impacts.
Top-mounted threaded preload adjuster allows for easy, tool-free fine-tuning of suspension settings.
Deflective disc valving contributes to consistent and responsive damping.
Available in standard or heavy-duty spring rates and black or chrome finishes.

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Will this fit your vehicle?

Product Details

When you're looking to smooth out the ride on your Harley-Davidson, especially on longer trips or varied road surfaces, the Progressive 444 Series Shocks are a solid option. These 11.5-inch shocks, finished in a bright chrome, are built to handle a wide range of Harley models, from the Electra Glide to the Road King and Street Glide. They're designed to make a noticeable difference in how your bike handles bumps and imperfections, aiming for a more comfortable experience mile after mile.

What sets these shocks apart is their proprietary Frequency Sensing Technology (FST). This advanced system allows the shocks to automatically adjust damping based on the frequency of the bumps you encounter. Whether it's a small ripple or a larger pothole, the FST helps distribute oil through the shock's ports to soak up the impact effectively. You also get a progressive rate spring, which means the spring gets stiffer as it compresses, providing a good balance of comfort on smaller bumps and support during harder impacts. Plus, the top-mounted threaded preload adjuster lets you easily fine-tune the suspension to your specific load or riding preference without needing special tools.

These shocks are available with different spring rates to match your needs, including standard, heavy-duty for riders over 250 lbs, and super heavy-duty for touring models over 350 lbs. This set includes the chrome 11.5-inch shocks. They are made in the USA and come with a limited lifetime warranty, reflecting Progressive's confidence in their well-built suspension components.