Progressive Suspension 944 Ultra Low shocks with Quik Preload System (QPS) deliver automatic damping adjustment via Frequency Sensing Technology, letting you adapt to solo or two-up riding in under a minute without removing saddlebags. Sit 2 inches lower than stock while maintaining the comfort of progressive rate springs designed for touring.
Features
- Frequency Sensing Technology (FST) automatically adjusts damping based on bump frequency
- Quik Preload System (QPS) adjusts spring preload in seconds without removing saddlebags
- Progressive Rate Main springs tuned for touring ride quality
- Sealed gear-driven preload adjuster with 17mm total adjustment range
- 30 complete turns of fine preload adjustment
- 8mm socket wrench operation (wrench not included)
- Available in Standard and Heavy Duty versions
- Lowers ride height 2 inches on most models
- Lifetime Limited Warranty
Specifications
-
Brand: Progressive
-
Manufacturer Part #: 944-4001UL-QPS
-
Weight: 9.7 lb
-
Category: Suspension / Shocks and Struts
-
California Prop 65 Warning: Yes. Contains chemicals known to the State of California to cause cancer and reproductive harm. Visit www.P65Warnings.ca.gov for more info.
Fitment
Fits Harley-Davidson touring models. Consult the Progressive website with your specific model year and frame type to confirm compatibility, as fitment varies by chassis.
Frequently Asked Questions
Do I have to remove my saddlebags to adjust preload?
No — the Quik Preload System lets you adjust preload in seconds while the bags stay on, perfect for switching between solo and two-up riding.
What is Frequency Sensing Technology (FST)?
FST senses the frequency of bumps and automatically adjusts the damping curve in real time, giving a smoother ride over varied road surfaces without manual adjustment.
How much lower will these sit compared to stock?
These shocks lower the bike approximately 2 inches on most Harley models, giving a more planted feel and easier ground reach.
Can I fine-tune the preload?
Yes — 30 complete turns of adjustment with a standard 8mm socket wrench allow precise preload tuning for your weight and riding style.
What's the difference between Standard and Heavy Duty versions?
Heavy Duty springs handle higher loads better for riders or two-up configurations carrying extra weight. Standard suits solo and lighter touring setups.
California Proposition 65 Warning
WARNING: Cancer and Reproductive Harm — California Prop 65 (Y). www.P65Warnings.ca.gov