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, providing a more consistently comfortable ride.

Can I adjust the suspension for different loads?

Yes, these shocks feature a top-mount threaded preload adjuster. You can easily adjust the spring preload by hand, without needing any special tools, to accommodate different rider weights or cargo loads.

What is the difference between standard and heavy-duty spring rates?

The standard weight springs are suitable for most riders, while the heavy-duty springs are recommended for riders who typically carry 250 lbs or more, or for touring models carrying significant loads. This ensures optimal performance and comfort based on your specific needs.

Progressive 444 Series Shocks 13.0in Black 444-4002B

Name: Progressive Harley 444 Series Shocks 13.0in - Black
Brand: Progressive
Price: 860.95 USD
Availability: InStock

Progressive Harley 444 Series Shocks 13.0in - Black

$860.95

Only 4 left in stock

Progressive Harley 444 Series Shocks 13.0in - Black. Features FST technology for an improved, comfortable ride across varied road conditions.

Key Features

Fits a wide range of Harley-Davidson motorcycles, including Road King, Electra Glide, and Street Glide models.
Features patented Frequency Sensing Technology (FST) that automatically adjusts damping for improved ride comfort.
Progressive rate spring and reflective disc valving work together for consistent damping.
Top mount threaded preload adjuster allows for easy, tool-free fine-tuning.
Available in standard or heavy-duty spring rates to match rider weight.
Durable black finish.

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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 13-inch shocks are designed to handle everything from minor road imperfections to larger impacts, making your ride more comfortable and controlled. They fit a wide range of Harley-Davidson models, including popular bikes like the Road King, Electra Glide, and Street Glide, offering a significant upgrade over stock suspension.

What sets these shocks apart is their patented Frequency Sensing Technology (FST). This advanced system allows the shocks to automatically adjust damping based on the frequency of bumps they encounter. If you hit a small ripple, the oil flows through specific ports to absorb it smoothly. Encounter a bigger pothole, and the oil distribution changes to soak up that impact effectively. This means you get a more consistent and comfortable ride, no matter what the road throws at you. The top mount threaded preload adjuster lets you fine-tune the suspension to your riding style or load, and you can do it by hand without needing special tools. They also feature a progressive rate spring and a reflective disc valving system for improved damping performance.

These shocks are well-built in the USA and come with a limited lifetime warranty, giving you peace of mind. You can choose between standard or heavy-duty spring rates depending on your typical riding weight, and these are the black finish version. Whether you're cruising around town or embarking on a cross-country tour, the 444 Series Shocks are designed to improve your riding experience significantly.