Progressive 444 Series shocks for Harley-Davidson use patented Frequency Sensing Technology (FST) to automatically adjust damping in real-time as you ride, smoothing both small bumps and large impacts. Hand-adjustable preload and progressive-rate springs deliver a comfortable, tuned ride without special tools.
Features
- Frequency Sensing Technology (FST) automatically adjusts damping based on bump frequency
- Progressive rate spring absorbs impacts across the entire suspension stroke
- Hand-adjustable preload — no special tool required
- Deflective disc valving for consistent damping control
- Available in standard or heavy-duty spring rates
- 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 #: 444-4036C
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Weight: 8.1 lb
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Category: Suspension / Shocks and Struts
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WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson models. Verify your specific model year and frame type before ordering for proper mount compatibility.
Frequently Asked Questions
What does Frequency Sensing Technology do?
FST senses the speed of bumps and automatically adjusts oil flow through ports — small bumps get less damping, big hits get more, for a smoother ride without manual adjustment.
Can I adjust these shocks myself?
Yes — the top-mount preload adjuster twists by hand. No special tools needed to dial in your preferred ride height and spring firmness.
Do these require any special installation tools?
Progressive recommends professional installation to ensure proper mounting and alignment. Hand-adjustable preload does not require tools once installed.
What finish options are available?
Black or chrome, in standard or heavy-duty spring rates depending on your bike's weight and riding style.
Are these shocks covered by a warranty?
Yes — Limited Lifetime Warranty on parts and labor when installed by an authorized dealer.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov