Progressive Suspensions 444 Series Shocks feature a proprietary patented Frequency Sensing Technology (FST) that has the unique ability to dynamically adjust damping as you ride;
what this means is whether you’re hitting the small or big bumps in the road, the shock distributes oil through ports accordingly to soak up the hit making for an ultimately comfortable ride.
A top mount threaded preload adjuster allows for fine-tuning with a simple twist of the cap.
444 Series shocks are available in 2 configurations: Standard (Up to 250 lbs.) and Heavy-duty (250+ lbs.).
Every shock is hand-built, tuned and dyno’d in our facility in La Palma, California and come with a lifetime warranty.
Finish | Black or Chrome |
Specifications | - Choice of Standard or heavy duty spring rate.
- Progressive rate spring.
- Adjust spring pre-load by hand, no special tool needed
- Deflective disc valving
- Frequency Sensing Technology (FST) Allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality
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Country of Origin | Made in USA |
Warranty | Lifetime Limited Warranty |