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 utilize patented Frequency Sensing Technology (FST) to automatically adjust damping in real time. This system responds to bump intensity, ensuring optimal oil flow for a consistently composed ride across both small ripples and big hits. Built in the USA, these shocks offer a significant upgrade in comfort and control.
These Progressive 444 Series shocks are engineered to deliver a superior ride experience for your Harley-Davidson. The innovative Frequency Sensing Technology (FST) is key to their performance, dynamically adapting the damping based on the intensity of road impacts. This means your V-twin will maintain composure and comfort whether you're encountering minor road imperfections or larger obstacles. With hand-adjustable preload and options for standard or heavy-duty spring rates, these shocks provide a customizable solution for any rider.
The 444 Series shocks are a robust upgrade, allowing riders to fine-tune their Harley-Davidson's suspension for optimal performance. The hand-adjustable preload simplifies adjustments for different loads or riding preferences, ensuring your bike is always set up correctly. Made in the USA and backed by a limited lifetime warranty, these shocks are built for durability and long-term reliability. Experience improved handling, stability, and comfort that transforms every ride into a more enjoyable journey.
What is Frequency Sensing Technology (FST) and how does it benefit my ride?
FST automatically adjusts damping in real time based on bump intensity. This means small ripples and big hits receive different oil flow, resulting in a consistently composed and comfortable ride.
Can I adjust the preload on these shocks without special tools?
Yes, the preload on these Progressive 444 Series shocks is hand-adjustable, so you won't need any special tools to make adjustments.
How do I ensure these shocks are compatible with my Harley-Davidson?
It's important to verify your specific year and model compatibility using Progressive's fitment chart or our Shop by Bike tool before ordering, as shock length and mounting points vary across models.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614099 |
| WEIGHT | 8.2 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.
