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 dynamically adjust damping on the fly. This system automatically responds to both small bumps and large hits, ensuring a consistent and comfortable ride across varied terrain. Riders can fine-tune their suspension with hand-adjustable preload and available spring rates, all without needing special tools.
These Progressive 444 Series shocks are engineered to provide a superior ride for your Harley-Davidson, integrating patented Frequency Sensing Technology (FST) for dynamic damping. This innovative system continually adapts to road conditions, delivering optimal performance whether you're encountering minor road imperfections or significant impacts. The result is a consistently smooth and controlled ride that enhances both comfort and confidence. With hand-adjustable preload and a choice of spring rates, these shocks offer a customizable solution for any rider seeking to upgrade their V-twin's suspension.
The 444 Series shocks are designed for riders who demand both performance and convenience. The hand-adjustable preload makes it simple to fine-tune your ride for different loads or preferences, without the need for specialized tools. This ease of adjustment, combined with the choice of spring rates, ensures that your Harley-Davidson's suspension is perfectly matched to your individual needs. Made in the USA and backed by a limited lifetime warranty, these shocks are a durable and effective upgrade that will transform your riding experience.
What is Frequency Sensing Technology (FST) and how does it improve my ride?
FST automatically senses bump frequency and adjusts damping in real time. This ensures a smooth ride over small road irregularities while still providing firm control for larger impacts.
Do these shocks require any special tools for adjustment?
No, the preload on these Progressive 444 shocks is hand-adjustable, meaning you won't need any special tools to fine-tune your ride for different loads or preferences.
How can I confirm these shocks will fit my specific Harley-Davidson model?
It's important to verify your specific year and model using Progressive's fitment chart or our Shop by Bike tool before ordering to confirm compatibility with the shock mount style.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614100 |
| WEIGHT | 8.9 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.
