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The Progressive Suspension 412 Series Shock (Part 412-4001B) is engineered specifically for Harley-Davidson models, offering an affordable yet effective upgrade to your motorcycle's suspension system. Designed with durability and simplicity in mind, this shock absorber features a robust construction that enhances ride comfort and handling, making it an ideal choice for riders seeking reliable performance. It includes a five-position cam-style spring preload adjuster, allowing you to easily customize the ride height and firmness to suit your preferences and riding conditions.
Constructed in the USA, the 412 Series Shock provides versatile styling options, including full show-chrome or black covers, along with chrome or black springs and end caps to match your bike’s aesthetic. These shocks are measured from center-of-eyelet to center-of-eyelet, ensuring precise compatibility with your Harley. Some shocks in this series are approved for road use; however, always review the latest certification to confirm compliance. Proper installation may require modifications, such as adjusting or spacing the chain or belt guard on '86-'15 XL models, to ensure adequate clearance and prevent contact with other components.
Depending on your riding style and load, selecting a slightly longer or shorter shock than the OEM can influence steering dynamics; a longer shock may offer quicker steering, while a shorter one can result in slightly slower handling. For bikes operated near maximum load capacity over half the time, Heavy Duty Applications are recommended to ensure durability and performance. Before installing shocks that differ from stock length, verify that wheel travel won’t cause clearance issues with the swingarm, exhaust, or tires, and that chain or belt guards are properly aligned. The Progressive Suspension 412 series offers a reliable, adjustable, and stylish upgrade to improve your Harley’s ride quality and handling performance.
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