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.
The Progressive 444 Series shocks are engineered to dramatically improve the ride quality of your Harley-Davidson, utilizing Frequency Sensing Technology (FST) to dynamically adjust damping in real-time. This advanced system ensures your V-twin handles both minor road chatter and significant impacts with superior composure. Riders can also personalize their setup with hand-adjustable preload, along with choices in spring rate and finish.
Experience a new level of control and comfort on your Harley-Davidson with the Progressive 444 Series shocks. These premium shocks feature patented Frequency Sensing Technology (FST), which intelligently adapts damping to the road conditions as you ride. This means a consistently smooth and stable ride, whether you're navigating rough city streets or carving through canyons. The 444 Series is a true made-in-USA suspension upgrade designed for serious riders.
Upgrading to Progressive 444 Series shocks means investing in a suspension system built for performance and durability. Their user-friendly design ensures that fine-tuning your ride is straightforward, allowing you to quickly achieve your preferred feel. These shocks are a direct replacement for many Harley-Davidson applications, offering a substantial improvement over stock. Always confirm your specific year and model to ensure proper fitment, as different Harley platforms utilize distinct shock mounts and lengths.
What is Frequency Sensing Technology (FST)?
FST is a proprietary Progressive technology that enables the shocks to automatically adjust their damping characteristics in real-time, responding dynamically to varying road imperfections for a smoother ride.
Is it difficult to adjust the preload on these shocks?
No, the Progressive 444 Series shocks feature hand-adjustable preload, which means you can easily fine-tune them without needing any special tools.
Will these shocks fit my Harley-Davidson bagger?
These shocks are designed for Harley-Davidson models. Please verify your specific year and model using our Shop by Bike feature or consult the fitment guide, as different Harley platforms have unique shock mounting and length requirements.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669231 |
| WEIGHT | 9.05 lb |
The shocks seem super nice, but they are incredibly stiff. Turns out they’re 130/200 top to bottom. Would be nice to have an option to choose your spring rate. Couldn’t find it in the description either. Have them installed on a 1998 sportster 1200 by the way. I’m about 180lbs and they don’t move at all, my friend who weighs about 260 also said they were way to firm. Hope this helps.
