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 for Harley-Davidson motorcycles are engineered with Frequency Sensing Technology (FST) to dynamically adjust damping in real time. This ensures your ride is consistently smooth, absorbing both minor road imperfections and significant impacts.
Unlock a new level of ride quality with these advanced shocks. The FST system constantly analyzes road input and adjusts damping on the fly, providing a plush feel over small bumps and firm control when you hit larger ones. This intelligent adaptation means less fatigue and more confidence during every mile.
The 444 Series shocks are designed to be highly adaptable to your riding style and needs. With hand-adjustable preload, you can easily fine-tune your suspension to account for different loads, from solo rides to two-up touring. The availability of standard or heavy-duty spring rates further allows you to optimize your Harley-Davidson's handling and comfort, ensuring a personalized and responsive ride.
What is Frequency Sensing Technology and how does it work?
Frequency Sensing Technology (FST) in Progressive 444 Series shocks automatically senses the frequency of bumps and adjusts damping ports to distribute oil accordingly, ensuring optimal damping for both small and large impacts.
Can I adjust the preload on these shocks myself?
Yes, the Progressive 444 Series shocks feature hand-adjustable preload, allowing you to easily modify your suspension settings without needing any special tools.
Will these shocks improve my ride comfort on long trips?
Absolutely. The FST system, combined with progressive rate springs and deflective disc valving, is designed to provide a consistently smooth and controlled ride, significantly enhancing comfort on long hauls by effectively absorbing various road imperfections.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669238 |
| WEIGHT | 7.8 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.
