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 bring advanced suspension tech to your Harley-Davidson, using Frequency Sensing Technology (FST) to automatically adjust damping on the fly. This means a more compliant ride over everything from minor road ripples to significant impacts. Riders can easily fine-tune their setup with hand-adjustable preload.
These Progressive 444 Series shocks are engineered to transform your Harley-Davidson's ride quality. With Frequency Sensing Technology (FST), the shocks dynamically adapt their damping characteristics to the road conditions, providing a plush feel over small bumps while firming up for larger hits. This intelligent system ensures consistent comfort and control without requiring manual adjustments while riding.
The 444 Series shocks are a direct upgrade for Harley-Davidson owners looking to improve their bike's handling and comfort. Whether you're cruising solo or loaded down for a long haul, the available spring rates and easy preload adjustment ensure optimal performance. These shocks are a solid foundation for any rider serious about their V-twin's suspension performance.
What does Frequency Sensing Technology (FST) do?
FST in the Progressive 444 shocks automatically adjusts the damping based on the frequency and size of bumps, providing a smooth ride over varied road conditions without manual intervention.
Are these shocks difficult to install?
Installation typically involves basic hand tools and can be done by a competent mechanic. The hand-adjustable preload also means no special tools are needed for ride tuning.
Will these shocks fit my specific Harley-Davidson model?
These shocks are designed for various Harley-Davidson models. Please verify fitment using the Shop by Bike tool on our website to ensure compatibility with your specific year and model.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614101 |
| WEIGHT | 8.6 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.
