Progressive Suspension 444 Series 12-Inch Heavy-Duty Shock - Black (Part Number 444-4058B)

Experience improved ride quality with the Progressive Suspension 444 Series Shock, designed with advanced features for demanding applications. This 12-inch shock absorber is built with Frequency Sensing Technology (FST), allowing it to detect bump frequencies and automatically adjust damping for a smoother ride across various terrains. The shock’s deflective disc valving ensures consistent damping response, providing stability and control during aggressive riding or heavy loads. The preload spring is adjustable by hand without requiring special tools, offering easy customization to suit your riding preferences. Each shock includes a progressive-rate spring and is high-pressure gas charged, ensuring reliable performance and shock absorption over extended periods of use. As a product made in the USA, it adheres to high manufacturing standards and durability requirements. Installing shocks slightly longer than stock may modify the head angle, resulting in quicker steering, while shorter shocks might slow steering response. Before replacing OEM shocks with non-standard lengths, verify that wheel travel adjustments won't lead to clearance issues such as swingarm or axle contact with exhaust components or interference with chain/belt guards or tires. These shocks are recommended for heavy-duty applications, particularly for bikes operating at or near maximum load ratings over 50% of the time, providing the strength and reliability needed for demanding conditions.

Features:

• Frequency Sensing Technology (FST): Automatically adjusts damping based on bump frequency for superior ride quality

• Deflective disc valving: Ensures consistent and reliable damping response

• Preload spring: Easily adjustable by hand without the need for special tools

• High-pressure gas charged: Delivers consistent performance and shock absorption

• Progressive-rate spring: Provides tailored suspension response for varying loads

• Made in the USA: Built to high standards for durability and quality

• Adjustable length: Slightly longer shocks may increase steering quickness; shorter shocks may slow steering

• Heavy-duty application suitability: Designed for bikes operating at or near maximum load over 50% of the time