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 feature proprietary Frequency Sensing Technology (FST) that dynamically adjusts damping in real time. This advanced system effectively absorbs both small road chop and large impacts, providing a consistently comfortable ride. With these shocks, your V-twin will handle varied road conditions with improved composure and control.
These Progressive 444 Series shocks are engineered to elevate your Harley-Davidson's ride. The innovative Frequency Sensing Technology (FST) is at the core of their performance, dynamically adjusting damping as you ride. This means the shocks are always optimized, whether you're encountering minor road imperfections or significant bumps, ensuring a smooth and controlled experience. The combination of hand-adjustable spring preload and deflective disc valving allows for precise tuning to match your weight and riding style.
The 444 Series shocks offer a significant upgrade, allowing you to dial in your suspension for optimal comfort and performance. The hand-adjustable preload simplifies setup for different loads or riding preferences, while the choice of spring rates ensures the shocks are perfectly matched to your specific needs. Built in the USA, these shocks are a durable and effective solution for riders looking to improve their Harley-Davidson's handling and ride quality, transforming every mile into a more enjoyable experience.
What is Frequency Sensing Technology (FST) and how does it benefit my ride?
FST is a proprietary technology that dynamically adjusts damping in real time, absorbing both small and large bumps. This provides a more consistent, comfortable, and controlled ride across various road conditions.
Can I adjust these shocks without special tools?
Yes, the spring preload on the Progressive 444 Series shocks is hand-adjustable, so you won't need any special tools to make adjustments.
How do I ensure these shocks fit my Harley-Davidson?
It's important to verify your specific model and year with Progressive's fitment guide or our Shop by Bike tool before ordering, as different Harley platforms may require different shock lengths and mounting configurations.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614094 |
| WEIGHT | 6.0 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.
