Progressive 444 Series shocks use Frequency Sensing Technology (FST) to automatically adjust damping as you ride, responding to small bumps and large impacts with appropriate oil distribution. Hand-adjustable preload, deflective disc valving, and progressive-rate springs deliver a tunable, comfortable ride for Harley-Davidson motorcycles.
Features
- Frequency Sensing Technology (FST) automatically adjusts damping to bump frequency
- Deflective disc valving
- Progressive-rate spring
- Hand-adjustable preload — no special tools required
- Available in standard or heavy duty spring rate
- Black or chrome finish options
- Made in USA
Specifications
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Brand: Progressive
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Manufacturer Part #: 444-4073B
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Category: Suspension / Shocks and Struts
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Weight: 9.6 lb
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Finish Options: Black or Chrome
Fitment
Fits Harley-Davidson motorcycles. Verify your specific model and year compatibility before ordering, as shock fitment varies by chassis and suspension type.
Frequently Asked Questions
What is Frequency Sensing Technology (FST)?
FST senses bump frequency and automatically adjusts damping rates — stiff for small bumps, compliant for big impacts — without rider input.
Can I adjust preload myself?
Yes. Hand-adjustable preload at the shock cap requires no special tools — twist to dial in your preferred ride height.
What's the warranty?
Limited Lifetime Warranty covers defects in materials and workmanship for the original owner.
Are these made in the USA?
Yes — Progressive 444 Series shocks are manufactured in the United States.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov