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The Progressive Suspension 412 Series Shock, designed specifically for Harley-Davidson FXD models, offers a straightforward and durable upgrade to enhance your motorcycle's suspension performance. Crafted with a focus on cost-effective reliability, these shocks feature a five-position cam-style spring preload adjuster that allows riders to fine-tune their ride height and firmness with ease, ensuring optimal handling and comfort across various riding conditions. Made in the USA, the shocks are available with options including full show-chrome or black covers, along with chrome or black springs and end caps, allowing customization to match your bike's aesthetic.
Each shock is measured from center-of-eyelet to center-of-eyelet, providing a consistent and reliable fit. When installing on '86-'15 XL models, some modifications or spacers may be necessary to accommodate chain or belt guards for proper clearance. The design options include slightly longer shocks that can subtly alter the head angle for quicker steering, or shorter shocks that may slow steering response. Heavy-duty applications are recommended for bikes frequently operated near their maximum load capacity, ensuring durability under demanding conditions. Before installation, confirm that your wheel travel and clearance points—such as swingarm, axle, exhaust, chain/belt guard, or tires—are compatible with the shock length to prevent contact issues. These shocks are approved for road use, with certification details available for reference, and are suitable for riders seeking a reliable, adjustable suspension upgrade that enhances ride quality and handling performance.
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