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.
Transform your Harley-Davidson's ride with Progressive 444 Series Shocks, engineered with advanced Frequency Sensing Technology (FST). This innovative system dynamically adjusts damping in real time, delivering a compliant ride that seamlessly responds to both small road imperfections and significant impacts.
The Progressive 444 Series Shocks are a premium upgrade for riders seeking unparalleled comfort and control on their Harley-Davidson. FST automatically adjusts the oil port, ensuring optimal damping without sacrificing ride comfort over varied terrain. Combined with deflective disc valving and a progressive rate spring, these shocks provide a stable and predictable foundation for your V-twin, enhancing both everyday cruising and spirited riding.
The 444 Series Shocks are designed for riders who appreciate fine-tuning. With hand-adjustable preload, you can easily set up your suspension for different loads or riding preferences without needing a toolbox. Available in standard or heavy-duty spring rates, these shocks can be precisely matched to your weight and riding style, ensuring your Harley-Davidson performs at its best. Always confirm correct shock length and mounting for your specific model.
What does Frequency Sensing Technology (FST) do?
FST allows the shock to sense bump frequency and automatically adjust damping, providing a smooth ride over small bumps and firm support for larger impacts.
Are these shocks adjustable?
Yes, the 444 Series shocks feature hand-adjustable preload, allowing you to easily fine-tune them for your weight, passenger, or gear without needing special tools.
Will these fit my Harley-Davidson?
Progressive offers 444 Series Shocks for various Harley-Davidson models. Please use our Shop by Bike tool to confirm the correct shock length and mounting for your specific year and model.
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-669574 |
| WEIGHT | 9.05 lb |
This is my 2nd set of progressive's 444 shocks.<br />My 1st set were on my custom 2013 Harley Davidson Dyna Switchback, the 2nd set are on my 2016 Triumph Rocket 3 roadster.<br />These shocks do a fantastic job of smoothing out the bumps in the road, even with a passenger.
