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 employ patented Frequency Sensing Technology (FST) to dynamically adjust damping in real time as you ride. This ensures a compliant ride whether you're encountering small road chop or larger obstacles, delivering consistent comfort and control. With these shocks, your Harley-Davidson will experience a significant upgrade in ride quality.
These Progressive 444 Series shocks are engineered to provide a superior ride for your Harley-Davidson. The patented Frequency Sensing Technology (FST) is the cornerstone of their performance, intelligently adapting damping to the road conditions as they change. This means the shocks respond optimally to both minor imperfections and significant impacts, ensuring a smooth and composed ride every time. The hand-adjustable spring preload and available standard or heavy-duty rates allow for precise tuning to match your specific riding style and load requirements.
The 444 Series shocks offer riders the ability to fine-tune their Harley-Davidson's suspension for any scenario. The hand-adjustable preload makes it simple to dial in the ride for solo excursions, two-up riding, or when carrying luggage, all without needing specialized tools. Coupled with the choice of spring rates and finish options, these USA-made shocks provide a customizable and durable solution for improving your V-twin's handling and overall ride comfort. Experience the difference of advanced suspension technology on your next ride.
What is Frequency Sensing Technology (FST) and how does it work?
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.
Can I adjust these shocks for different riding conditions or loads?
Yes, these shocks feature hand-adjustable spring preload, allowing you to easily tune them for solo riding, two-up, or carrying extra gear, all without needing special tools.
How do I confirm these shocks are compatible with my Harley-Davidson?
It's essential to confirm your specific year and frame style using Progressive's fitment chart or our Shop by Bike tool before ordering to ensure correct compatibility.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614098 |
| WEIGHT | 8.7 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.
