Progressive Suspension 444 Series Shock - 13.5 Inch Super-Duty Black – Model 444-4077B

The Progressive Suspension 444 Series Shock Absorber, part number 444-4077B, is engineered for superior ride quality and durability on heavy-duty motorcycles. Featuring advanced Frequency Sensing Technology (FST), these shocks automatically adapt to varying bump frequencies, providing optimal damping for a smoother and more controlled ride. The deflective disc valving system ensures consistent performance across different terrains and riding conditions, making it suitable for demanding applications. The pre-load spring is adjustable by hand without requiring special tools, allowing riders to easily fine-tune suspension settings to match load and riding preferences. These shocks come equipped with a progressive-rate spring and are high-pressure gas charged, ensuring reliable performance and resistance to fade during extended or aggressive riding sessions. Made in the USA, the shocks are designed to withstand the rigors of heavy-duty use, making them ideal for motorcycles operating near or at maximum load capacity over 50% of the time. The slightly longer design of these shocks can subtly alter the head angle, resulting in quicker steering and enhanced maneuverability, while shorter variants may provide slower steering responses. Before installing shocks that differ from OEM length, verify your wheel travel can accommodate these modifications without causing clearance issues with components such as the swingarm, axle, exhaust, chain or belt guard, or tires. Proper selection and installation of these shocks will enhance your motorcycle’s handling, stability, and ride comfort, especially under demanding riding conditions.

Features:

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

• Deflective disc valving: Ensures consistent performance across various terrains

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

• Progressive-rate spring: Provides smooth compression and rebound characteristics

• High-pressure gas charged: Delivers reliable and fade-resistant performance

• Made in the USA: Built for durability and quality

• Length variation: Slightly longer or shorter than stock to alter steering response

• Heavy-duty application suitability: Designed for motorcycles operating at or near maximum load capacity