PROGRESSIVE SUSPENSION
Progressive Suspension 444 Series Shock - 13-Inch Heavy-Duty Black (Part Number 444-4020B)
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Progressive Suspension 444 Series Shock - 13-Inch Heavy-Duty Black (Part Number 444-4020B)
The Progressive Suspension 444 Series Shock is engineered for high-performance motorcycle applications, offering a 13-inch length designed for heavy-duty use. Featuring the innovative Frequency Sensing Technology (FST), these shocks automatically adjust damping based on the frequency of bumps, resulting in a smoother and more controlled ride across varying terrains. The deflective disc valving ensures consistent damping performance, while the preload spring can be easily adjusted by hand without requiring specialized tools, allowing for quick customization to rider preferences and load conditions. Equipped with a progressive-rate spring and high-pressure gas charge, these shocks deliver reliable performance and durability, whether on demanding off-road trails or daily commuting.
Manufactured in the USA, these shocks are slightly longer or shorter than stock models, which can influence steering characteristics such as head angle and responsiveness. It is important to verify that your wheel travel can accommodate these length modifications without causing clearance issues with components like the swingarm, exhaust, chain or belt guards, and tires. Heavy-duty applications are recommended for bikes frequently operating at or near maximum load ratings, exceeding 50% of their capacity, ensuring optimal performance and longevity under demanding conditions. Designed to enhance ride quality and handling, the Progressive Suspension 444 Series Shock is an ideal upgrade for riders seeking durable, adjustable, and high-performance suspension components.
Features:
- Frequency Sensing Technology (FST): Automatically adjusts damping based on bump frequency for superior ride quality
- Deflective disc valving: Provides consistent damping performance
- Adjustable preload spring: Easily fine-tuned by hand without special tools
- Progressive-rate spring: Offers smooth compression and rebound
- High-pressure gas charge: Ensures reliable and consistent performance
- Made in the USA: Quality manufacturing and craftsmanship
- Compatibility considerations: Slightly longer or shorter than stock may alter steering dynamics; verify wheel travel clearance before installation
- Heavy-duty application suitability: Recommended for bikes operating at or near maximum load capacity over 50%
US Dollars