Progressive Suspension has focused exclusively on American V-twin suspension since 1982, and its Monotube fork cartridges and 400/970/970G shock series are among the most common upgrades on baggers and Softails. For most riders the stock rear shock is the single worst part on the bike — this is the fix.
Progressive 444 Series shocks feature proprietary Frequency Sensing Technology (FST) that dynamically adjusts damping in real time, delivering a consistently comfortable ride over any terrain. These shocks incorporate deflective disc valving and progressive-rate springs, available in standard or heavy-duty configurations, allowing riders to dial in their preferred feel.
Enhance your Harley-Davidson's suspension performance with Progressive 444 Series shocks. The key to their superior ride quality is the Frequency Sensing Technology (FST), which automatically adapts the damping characteristics to the road conditions as you ride. This intelligent system ensures that whether you encounter small road imperfections or significant bumps, your ride remains smooth, controlled, and comfortable.
The 444 Series shocks are a significant upgrade for any Harley-Davidson, offering improved stability and comfort. The combination of FST and progressive-rate springs means your bike will handle better in various riding scenarios, from daily commutes to long-distance tours. With options for spring rates and finishes, you can customize the look and feel to perfectly match your V-twin.
What is the benefit of Frequency Sensing Technology (FST)?
FST automatically senses bump frequency and adjusts damping in real time, providing a consistent and comfortable ride by optimizing suspension response to both small and large bumps.
Can I adjust the preload on these shocks myself?
Yes, the Progressive 444 Series shocks feature hand-adjustable preload, meaning you can easily fine-tune them without needing any special tools.
Will these shocks change the ride height of my Harley-Davidson?
The 444 Series shocks are designed to replace stock units, generally maintaining the intended ride height. Always confirm specific fitment and dimensions for your model before ordering.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614104 |
| WEIGHT | 8.4 lb |
This is my 2nd set of progressive's 444 shocks.<br />My 1st set were on my custom 2013 Harley Davidson Dyna Switchback, the 2nd set are on my 2016 Triumph Rocket 3 roadster.<br />These shocks do a fantastic job of smoothing out the bumps in the road, even with a passenger.
