How does the Quik Preload System (QPS) work?

The QPS uses a sealed gear drive mechanism that allows you to adjust the spring preload with an 8mm socket wrench. This system is designed so you can make these adjustments quickly, even with saddlebags installed on your motorcycle.

What is Frequency Sensing Technology (FST)?

FST allows the shocks to sense the frequency of bumps and automatically adjust the damping characteristics in real-time. This helps to provide a more consistent and comfortable ride by adapting to changing road conditions.

What else might I need to install these shocks?

You will need an 8mm socket wrench to make preload adjustments. It's also recommended to consult your motorcycle's service manual for the correct procedure and any specific torque requirements when installing the shocks themselves.

Specifications

Brand: Progressive
Part #: 944-4019UL-QPS
UPC: 944-4019UL-QPS

Progressive Harley Ultra Low-QPS 944 Series Shocks, 12.5in, 11in Ride Height Heavy Duty - Black / G

Name: Progressive Harley Ultra Low-QPS 944 Series Shocks, 12.5in, 11in Ride Height Heavy Duty - Black / G
Brand: Progressive
SKU: progressive-progressive-harley-ultra-low-qps-944-series-shocks-12-5in-11in-ride--t14-834756
Price: 1209.95 USD
Availability: BackOrder

$1209.95

On Backorder — Expected to ship by Jun 20, 2026

Order now to reserve yours — we'll ship as soon as stock arrives. Full refund if we're unable to fulfill.

Progressive Harley Ultra Low-QPS 944 Series Shocks, 12.5in, 11in Ride Height Heavy Duty - Black / G. Features Quik Preload System for fast, on-bike adjustments.

Key Features

Fits select Harley-Davidson touring models with a 2-inch lowered ride height.
Features the Quik Preload System (QPS) for rapid, on-bike preload adjustments without removing saddlebags.
Sealed gear-driven preload adjuster allows for 30 complete turns of fine-tuning.
Frequency Sensing Technology (FST) automatically adjusts damping for optimal ride quality.
Progressive Rate Main springs are specifically designed for touring applications.
Heavy Duty version suitable for increased loads and demanding conditions.

These shocks are designed to lower the ride height by approximately 2 inches on most Harley-Davidson touring models. Please verify compatibility with your specific motorcycle model.

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About this part

Product Details

The sealed gear drive mechanism in these Progressive 944 Ultra Low QPS shocks is a key detail, allowing for smooth and precise preload adjustments. These shocks are built for Harley-Davidson touring bikes, specifically designed to lower the ride height by about 2 inches on most models while maintaining excellent performance. The Quik Preload System (QPS) is a real game-changer here; it means you can adjust your suspension's sag in under a minute, even with saddlebags installed. This is incredibly useful if you frequently switch between riding solo, with a passenger, or carrying extra gear, ensuring your bike handles predictably no matter the load.

Beyond the easy preload adjustment, these shocks feature Progressive Rate Main springs, which are tuned for touring comfort and performance. They also incorporate Frequency Sensing Technology (FST). This advanced system allows the shocks to automatically adjust damping based on the frequency of bumps, providing a more controlled and comfortable ride over varying road conditions. With 30 full turns of fine adjustment available using a simple 8mm socket, you can dial in the perfect setup for your specific riding style and load. This Heavy Duty version is built to handle more demanding conditions.

These shocks come with a Lifetime Limited Warranty from Progressive Suspension, offering peace of mind with your investment. While they are designed to fit a wide range of Harley-Davidson touring models and lower the ride height, it's always a good idea to double-check the specific fitment for your bike to ensure they're the right match. You'll need an 8mm socket wrench for adjustments, which is not included.