Specifications
- Brand
- Progressive
- Part #
- 444-4051B
- UPC
- 444-4051B

Progressive Harley 444 Series Shocks 13.0in - Black
$860.95
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Progressive Harley 444 Series Shocks 13.0in - Black. Features Frequency Sensing Technology for an improved, comfortable ride.
Key Features
- Fits a wide range of Harley-Davidson Dyna models from 1991 to 2017.
- Features patented Frequency Sensing Technology (FST) for automatic damping adjustment.
- Progressive rate spring offers a comfortable initial feel that stiffens under load.
- Top mount threaded preload adjuster allows for tool-free fine-tuning.
- Deflective disc valving ensures consistent damping performance.
- Available in standard or heavy-duty spring rates and black or chrome finishes.
Product Details
What you get in this package are a pair of Progressive 444 Series Shocks, measuring 13 inches long with a black finish. These shocks are built for a range of Harley-Davidson Dyna models, including popular bikes like the FXD Dyna Super Glide, FXDB Street Bob, and FXDF Fat Bob. They are designed to replace your stock shocks and significantly improve your ride quality, whether you're cruising on smooth highways or navigating rougher roads.
The standout feature here is Progressive's patented Frequency Sensing Technology (FST). This advanced system allows the shocks to automatically adjust damping based on the frequency of bumps they encounter. If you hit a small ripple or a larger pothole, the FST system senses it and adjusts the oil flow through specific ports within the shock. This dynamic adjustment helps soak up impacts more effectively, leading to a more comfortable and controlled ride. You also get a progressive rate spring, which offers a softer initial feel and stiffens up as needed under load. Plus, the top-mounted threaded preload adjuster lets you fine-tune the suspension for your specific riding weight or load without needing any special tools – just a simple twist of the cap.
These shocks are well-built in the USA and come with a Limited Lifetime Warranty, giving you peace of mind. They also feature a deflective disc valving system for consistent performance. You can choose between standard or heavy-duty spring rates, depending on your typical riding weight, and select either a black or chrome finish to match your bike's style. For those who frequently carry heavier loads or tour with a passenger, Progressive offers Super Heavy Duty options specifically for touring models.
Specifications
- Brand
- Progressive
- Manufacturer Part #
- 444-4051B
- UPC
- 444-4051B
Frequently Asked Questions
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