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Designed specifically for Harley-Davidson FL models, the Progressive Suspension 412 Series Shock offers an effective upgrade to your motorcycle’s suspension system. Featuring a simple yet durable design, these shocks provide a cost-efficient way to improve ride quality and handling. The 412 series includes a five-position cam-style spring load preload adjuster, allowing riders to easily customize the suspension setup for varying loads and riding conditions. This feature helps optimize comfort and control, whether you’re cruising or tackling rougher terrain.
Constructed with a black finish, these shocks are available in multiple style options, including full show-chrome or black covers, as well as chrome or black springs and end caps. Made in the USA, they are engineered to meet high standards of quality and durability. The shocks are measured from center of eyelet to center of eyelet, ensuring precise fitment on compatible Harley models. When installing on '86-'15 XL models, some modifications to the chain or belt guard may be necessary to ensure proper clearance. A slightly longer shock can subtly alter the head angle, resulting in quicker steering, while a shorter shock can produce a slightly slower steering response. Heavy-duty applications are recommended for bikes frequently operated near maximum load ratings, typically over 50% of the time.
Before purchasing, verify that your wheel travel can accommodate shocks of different lengths without causing clearance issues such as contact with the exhaust, swingarm, axle, chain/belt guard, or tires. Proper installation and fitment ensure optimal performance, safety, and ride comfort, making the Progressive Suspension 412 Series Shock an excellent choice for riders seeking enhanced suspension performance and reliability.
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