Progressive Suspension 444-4061C Series Rear Shock Chrome Standard - 444 12

The Progressive Suspension 444 Series rear shock represents a breakthrough in motorcycle suspension technology with its patented Frequency Sensing Technology (FST). This 12-inch chrome shock is designed for Harley-Davidson touring models, providing a significant upgrade over stock suspension components.

Patented Frequency Sensing Technology:

The revolutionary FST system dynamically adjusts damping in real-time as you ride. By sensing the frequency of bumps—whether large or small—the shock automatically distributes oil through specially designed ports to absorb impacts and deliver superior ride quality. This advanced technology ensures optimal comfort and control across varying road conditions.

Key Features:

• Patented Frequency Sensing Technology (FST) for automatic damping adjustment
• Deflective disc valving for precise control without harshness
• Hand-adjustable spring preload with top-mount threaded adjuster—no special tools required
• Progressive-rate spring for smooth compression and spirited performance
• High-pressure gas charged for consistent damping performance
• 12-inch length in chrome finish
• Standard duty configuration (up to 250 lbs.)
• Made in the USA
• Sold as a pair

The 444 Series features a monotube design that keeps fluid less aerated and dissipates heat more efficiently than traditional twin-tube shocks. Progressive Suspension backs these premium shocks with a Lifetime Limited Warranty, reflecting decades of engineering expertise and quality manufacturing.

Important Note: Shocks with different lengths than OEM may alter head angle and steering characteristics. Confirm wheel travel compatibility before installation to avoid clearance issues with exhaust, swingarm, chain/belt guards, or tires.