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.
Progressive 444 Shocks — Harley-Davidson
Progressive 444 Series shocks use proprietary Frequency Sensing Technology (FST) to dynamically adjust damping in real time, automatically responding to small and large bumps for a compliant ride. Hand-adjustable preload and available spring rates let you dial in comfort for your weight and riding style without special tools.
Features
- Frequency Sensing Technology (FST) automatically adjusts damping based on bump frequency
- Deflective disc valving for progressive damping curve
- Hand-adjustable preload — no special tool required
- Standard or heavy-duty spring rate options
- Available in black or chrome finish
- Made in USA with Limited Lifetime Warranty
Specifications
- Brand: Progressive
- Manufacturer Part #: 444-4058B
- Weight: 8.9 lb per shock
- Category: Suspension / Shocks and Struts
- WARNING: California Prop 65: This product can expose you to chemicals known to cause cancer and reproductive harm. For more info visit www.P65Warnings.ca.gov
Fitment
Fits Harley-Davidson motorcycles. Confirm your specific model and year for correct fitment before ordering.
Frequently Asked Questions
How does Frequency Sensing Technology work?
FST senses bump frequency and automatically routes oil through internal ports to adjust damping — giving you comfort over small bumps and control over large ones without manual adjustment.
Do I need tools to adjust the preload?
No — the top-mount threaded adjuster twists by hand. Simply turn the cap clockwise to increase preload or counterclockwise to decrease it.
What spring rate should I choose?
Standard rate works for average-weight riders; heavy-duty is recommended for heavier riders or two-up riding. Consider your body weight and typical load.
Are these made in the USA?
Yes — Progressive manufactures these shocks in the USA and backs them with a Limited Lifetime Warranty.
Will these fit my specific Harley model?
Progressive offers 444 shocks in multiple configurations for different Harley platforms. Verify your year and model with the manufacturer or retailer before purchase.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov
| BRAND | Progressive |
| TYPE | Shocks and Struts |
| SKU | T14-614106 |
| WEIGHT | 8.9 lb |