Progressive Suspension 444 Series Heavy-Duty Shock Absorber - 13-Inch, Black (Part #444-4020B)

The Progressive Suspension 444 Series Shock (Part #444-4020B) is designed for riders demanding superior ride quality and durability. Featuring innovative Frequency Sensing Technology (FST), these shocks automatically adjust damping based on the frequency of bumps encountered, ensuring a smooth and controlled ride across various terrains. The deflective disc valving enhances shock responsiveness, providing consistent performance and improved handling. A pre-load spring allows for easy manual adjustment without the need for special tools, facilitating quick customization to match rider preferences and load conditions. The shocks include a progressive-rate spring, which offers a balanced blend of comfort and support, making them suitable for heavy-duty applications where maximum load capacity is often required. They are high-pressure gas charged, ensuring consistent damping characteristics over time and under demanding riding conditions. Made in the USA, these shocks are slightly longer than OEM standards, which can subtly alter the front-end head angle and provide quicker steering response, enhancing maneuverability. Conversely, shorter shocks may result in a slower steering feel and slight modifications in head angle. Before installation, riders should verify that wheel travel can be adjusted without causing clearance issues such as contact with the exhaust, swingarm, axle, chain or belt guard, or tires. These shocks are especially recommended for motorcycles operating at or near their maximum load capacity over 50% of the time, offering the durability and performance needed for demanding riding environments.

Features:

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

• Deflective disc valving: Enhances responsiveness and consistent shock performance

• Pre-load spring: Easily adjustable by hand without special tools

• Progressive-rate spring: Provides balanced support and comfort

• High-pressure gas charged: Ensures consistent damping over extended use

• Made in the USA: Quality manufacturing standards

• Slightly longer shocks: May improve steering response and head angle

• Recommended for heavy-duty applications: Suitable for bikes operating at or near maximum load capacity