PROGRESSIVE SUSPENSION 444 Series Shocks — 318 mm (12.50") extended length, rear, Chrome – 91-17 Dyna, 01-02, 07-10 CVO

The 444 Series Shocks feature the all-new Frequency Sensing Technology (FST), which senses the frequency of a bump and automatically adjusts damping for superior ride quality. 🔧

• Deflective disc valving for controlled, predictable damping
• Preload spring adjusts by hand with no special tool needed
• Includes a progressive-rate spring and is high-pressure gas charged for consistent performance
• Made in the USA
• Shocks slightly longer than stock may alter head angle slightly and provide quicker steering
• Shocks slightly shorter than stock may alter head angle and provide slower steering
• Before purchasing or attempting to install shocks different than OEM length, confirm your wheel travel can be altered without causing clearance issues such as swingarm/axle to exhaust contact and chain/belt guard or tire contact
• Heavy duty applications recommended for bikes operating at or near maximum load rating over 50% of the time

These shocks are designed to improve comfort and control across varied road surfaces by reacting to bump frequency in real time. Always inspect mounting points and clearances before installation. ⚠️