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 bring advanced suspension technology to your Harley-Davidson, using patented Frequency Sensing Technology (FST) to deliver a consistently smooth ride. These shocks automatically adapt to road conditions, providing optimal damping for both minor road imperfections and major impacts. Enjoy a more controlled and comfortable ride, whether you're cruising or pushing your V-twin.
When it's time to upgrade your Harley's rear suspension, the Progressive 444 Series shocks offer a significant improvement in ride quality and handling. Engineered with Frequency Sensing Technology (FST), these shocks dynamically adjust damping in real-time, ensuring a responsive and comfortable experience across varying road surfaces. This means less jarring over bumps and more stability through corners, transforming your ride.
The 444 Series shocks are designed for riders who demand performance and tunability. With hand-adjustable preload, you can easily set your sag and fine-tune the ride to your preference, whether you're riding solo or two-up. These shocks are a direct bolt-on upgrade, making installation straightforward for most Harley-Davidson models, allowing you to quickly get back on the road with improved comfort and confidence.
What is Frequency Sensing Technology (FST)?
FST is a patented Progressive technology that automatically adjusts the shock's damping in real-time based on the frequency of bumps encountered, providing a smoother ride over various road conditions.
Do these shocks require special tools for adjustment?
No, the preload on Progressive 444 Series shocks is hand-adjustable, so you won't need any special tools to fine-tune your ride.
Will these shocks fit my specific Harley-Davidson model?
These shocks are designed for Harley-Davidson models. Please use our Shop by Bike feature or consult the fitment guide to confirm compatibility with your specific year and model before ordering.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669228 |
| WEIGHT | 8.1 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.
