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The Progressive Suspension 412 Series Shock is designed specifically for Harley-Davidson models, offering a simple yet durable upgrade to enhance your motorcycle's suspension performance. Featuring a five-position cam-style spring preload adjuster, these shocks allow you to easily fine-tune your ride for optimal comfort and handling. Made in the USA, the 412-4018C model combines quality craftsmanship with practical functionality, making it an excellent choice for riders seeking an affordable suspension improvement.
Constructed with an eye for versatility, these shocks are available with various style options, including full show-chrome or black covers, as well as chrome or black springs and end caps. All shocks are measured from center-of-eyelet to center-of-eyelet, ensuring proper 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. These shocks are approved for road use, and riders should consult the latest certification to confirm compliance.
Adjusting the length of these shocks can influence steering characteristics; slightly longer shocks may provide quicker steering by altering the head angle, while slightly shorter shocks may slow steering response. For heavy-duty applications, it's recommended to use these shocks on bikes operated near or at the maximum load rating over 50% of the time. Before purchasing, verify that changing the shock length won't cause clearance issues with components like the swingarm, exhaust, or tires, especially if selecting shocks different from the OEM length. This ensures safe and reliable performance, tailored to your riding style and motorcycle setup.
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