Progressive 444 Series shocks use patented Frequency Sensing Technology (FST) to dynamically adjust damping on the fly, responding to small bumps and big hits with automatic oil distribution for a balanced, comfortable ride. Hand-adjustable preload and choice of standard or heavy-duty spring rates let you dial in the suspension to your weight and riding style.
Features
- Frequency Sensing Technology (FST) automatically adjusts damping based on bump frequency
- Deflective disc valving for progressive damping curve
- Hand-adjustable spring preload — no special tools required
- Available in standard or heavy-duty spring rate
- Black or chrome finish options
- Made in USA with Limited Lifetime Warranty
Specifications
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Brand: Progressive
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Manufacturer Part #: 444-4076B
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Weight: 9.4 lb per pair
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Spring Type: Progressive rate
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Preload Adjustment: Hand-adjustable
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Category: Suspension / Shocks and Struts
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WARNING: Cancer and Reproductive Harm — California Prop 65. www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson models. Verify fitment with your specific year and model before ordering.
Frequently Asked Questions
What is Frequency Sensing Technology (FST)?
FST senses how fast bumps hit and adjusts shock damping automatically — small bumps get soft damping, big ones get firmer resistance for consistent comfort.
Do I need special tools to adjust preload?
No — the top-mount preload adjuster twists by hand. You can fine-tune spring tension without removing the shock or using tools.
What's the difference between standard and heavy-duty spring rates?
Standard rate suits most riders at typical weight. Heavy-duty rate is for heavier riders or those carrying cargo regularly.
Are these shocks made in the USA?
Yes, Progressive manufactures these shocks in the USA and backs them with a Limited Lifetime Warranty.
Do I need to bleed or service these shocks?
Progressive 444 shocks are sealed and self-adjusting — no manual bleeding or frequent service required during normal use.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov