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The Progressive Suspension 412 Series Shock (Part Number: 412-4071B) is engineered specifically for Harley Davidson FLH and T models, providing a reliable and cost-effective upgrade to enhance your motorcycle's suspension performance. This shock features a simple yet durable design that improves ride quality and handling while maintaining affordability. Its five-position cam style spring preload adjuster allows riders to easily customize their suspension setup for various riding conditions and personal preferences, ensuring a comfortable and controlled ride. Constructed with quality materials, the 412 Series Shock is made in the USA, emphasizing durability and craftsmanship.
Designed with versatility in mind, the 412 Series Shock offers multiple style options, including full show-chrome or black covers, along with chrome or black springs and end caps. These aesthetic choices allow riders to match their motorcycle's look while benefiting from a high-performance suspension upgrade. All shocks are measured from center of eyelet to center of eyelet, ensuring compatibility and ease of installation. When installing shocks on '86-'15 XL models, users should verify if modifications or spacing are necessary around the chain or belt guard to ensure proper clearance. The shock's length variations—either slightly longer or shorter than stock—can affect steering characteristics by subtly altering the head angle, with longer shocks providing quicker steering and shorter shocks resulting in slower response.
Heavy-duty applications are recommended for bikes operated at or near their maximum load capacity over 50% of the time, ensuring optimal performance and longevity under demanding conditions. Before purchasing shocks that differ from stock length, it is important to confirm that wheel travel can be adjusted without causing contact issues with the swingarm, axle, exhaust, chain or belt guard, or tires. This comprehensive upgrade enhances ride comfort, handling, and style, making it an excellent choice for Harley Davidson enthusiasts seeking reliable suspension improvements.
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