Progressive Suspension 444 Series Shock - 13.5 inch Heavy-Duty Black Suspension Shock for Motorcycles (Part #444-4021B)

The Progressive Suspension 444 Series Shock with a 13.5-inch length offers advanced features designed to enhance motorcycle ride quality and handling. Featuring the all-new Frequency Sensing Technology (FST), these shocks can detect the frequency of bumps and automatically adjust damping for an optimized ride experience, providing a smoother and more controlled ride across varied terrains. The shocks are equipped with deflective disc valving to offer consistent damping performance and are high-pressure gas charged to maintain performance under demanding conditions. The included progressive-rate spring allows for better absorption of impacts, especially during aggressive riding or heavy loads, making these shocks ideal for heavy-duty applications. Made in the USA, the shocks are built to meet high standards of quality and durability, ensuring longevity and reliable performance. The pre-load spring can be adjusted by hand without the need for special tools, simplifying setup and customization for individual rider preferences. These shocks are slightly longer than stock, which may alter the head angle slightly and provide quicker steering, while shorter shocks can provide slower steering and altered handling characteristics. It is important to verify that your wheel travel can accommodate shocks of different lengths without causing clearance issues such as swingarm or axle contact with exhaust components or chain/belt guards and tires. Heavy-duty applications are recommended for motorcycles operating at or near maximum load ratings over 50% of the time, ensuring durability and performance under demanding riding conditions. Whether upgrading for improved ride quality or handling, the Progressive Suspension 444 series offers a reliable, high-performance solution tailored to serious riders seeking enhanced motorcycle suspension performance.

Features:

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

• Deflective disc valving: Ensures consistent damping performance

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

• High-pressure gas charged: Maintains performance under heavy loads

• Progressive-rate spring: Provides improved impact absorption

• Made in the USA: Built to high quality standards

• Length options: Slightly longer or shorter than stock, affecting steering and handling

• Heavy-duty design: Suitable for motorcycles operating under maximum or near-maximum load conditions