What makes the Frequency Sensing Technology (FST) special?

The FST allows the shocks to automatically adjust their damping based on the frequency of bumps. This means the shock can react differently to small road imperfections versus larger impacts, distributing oil through ports to soak up the hit for a more comfortable ride.

How do I adjust the spring preload on these shocks?

The 444 Series shocks feature a top-mount threaded preload adjuster. You can fine-tune the spring preload with a simple twist of the cap by hand, without needing any special tools.

What are the different spring rate options available for the 444 Series?

The 444 Series shocks are offered in three configurations: Standard Weight for general use, Heavy-duty for riders weighing 250 lbs or more, and Super Heavy Duty specifically for touring models weighing 350 lbs or more.

Progressive Harley 444 Series Shocks 11.5in - Chrome

Specifications

Brand: Progressive
Part #: 444-4063C
UPC: 444-4063C

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

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Key Features

Fits a wide range of Harley-Davidson Sportster models.
Features patented Frequency Sensing Technology (FST) for automatic damping adjustment.
Top mount threaded preload adjuster allows for easy, tool-free fine-tuning.
Deflective disc valving and progressive rate spring work together for improved ride quality.
Available in standard weight, heavy-duty (250+ lbs), and super heavy-duty (350+ lbs) spring rates.
Chrome finish for a classic look.

Secure CheckoutFast Shipping631-982-0042

Will this fit your vehicle?

Product Details

Progressive Suspension is well-known for making reliable suspension components for Harley-Davidson motorcycles. The 444 Series Shocks are a prime example of their commitment to improving your ride. These 11.5-inch chrome shocks are designed to fit a wide range of Harley-Davidson Sportster models, offering a significant upgrade over stock suspension.

What sets the 444 Series apart is its patented Frequency Sensing Technology (FST). This advanced system allows the shocks to automatically adjust their damping based on the frequency of bumps encountered on the road. Whether you're dealing with small road imperfections or larger impacts, the FST distributes oil through internal ports to effectively absorb the shock, leading to a more comfortable and controlled ride. You can also fine-tune the spring preload with the top-mounted threaded adjuster, which requires no special tools – just a simple twist. These shocks come with a progressive rate spring and deflective disc valving for consistent performance.

These shocks are available in different configurations to suit your needs, including standard weight, heavy-duty for riders over 250 lbs, and super heavy-duty for touring models over 350 lbs. This particular model is the chrome 11.5-inch version. They are built in the USA and come with a limited lifetime warranty, giving you peace of mind with your purchase.